﻿<?xml version="1.0" encoding="utf-8" standalone="yes"?><rss version="2.0" xmlns:dc="http://purl.org/dc/elements/1.1/" xmlns:trackback="http://madskills.com/public/xml/rss/module/trackback/" xmlns:wfw="http://wellformedweb.org/CommentAPI/" xmlns:slash="http://purl.org/rss/1.0/modules/slash/"><channel><title>C++博客-ACM___________________________-随笔分类-ACM ( 枚举 )</title><link>http://www.cppblog.com/MiYu/category/14419.html</link><description>                             ______________白白の屋</description><language>zh-cn</language><lastBuildDate>Sun, 14 Nov 2010 20:34:18 GMT</lastBuildDate><pubDate>Sun, 14 Nov 2010 20:34:18 GMT</pubDate><ttl>60</ttl><item><title>HDU 3584 HDOJ 3584 Cube  ACM 3584 IN HDU</title><link>http://www.cppblog.com/MiYu/archive/2010/11/14/133577.html</link><dc:creator>MiYu</dc:creator><author>MiYu</author><pubDate>Sun, 14 Nov 2010 02:35:00 GMT</pubDate><guid>http://www.cppblog.com/MiYu/archive/2010/11/14/133577.html</guid><wfw:comment>http://www.cppblog.com/MiYu/comments/133577.html</wfw:comment><comments>http://www.cppblog.com/MiYu/archive/2010/11/14/133577.html#Feedback</comments><slash:comments>1</slash:comments><wfw:commentRss>http://www.cppblog.com/MiYu/comments/commentRss/133577.html</wfw:commentRss><trackback:ping>http://www.cppblog.com/MiYu/services/trackbacks/133577.html</trackback:ping><description><![CDATA[
<span style="font-family: verdana, 'courier new'; font-size: 14px; line-height: 21px; "><p style="margin-top: 5px; margin-right: auto; margin-bottom: 5px; margin-left: auto; text-indent: 0px; ">MiYu原创, 转帖请注明 : 转载自&nbsp;<a href="http://baiyun.me/"><font color="#000000">______________白白の屋</font></a>&nbsp;&nbsp;<img src="http://www.cnblogs.com/Emoticons/baimantou/223332482.gif" alt="">&nbsp;&nbsp;</p><p style="margin-top: 5px; margin-right: auto; margin-bottom: 5px; margin-left: auto; text-indent: 0px; ">&nbsp;</p><p style="margin-top: 5px; margin-right: auto; margin-bottom: 5px; margin-left: auto; text-indent: 0px; ">题目描述:</p><span style="font-family: 'Times New Roman'; line-height: normal; font-size: medium; "><h1 style="color: rgb(26, 92, 200); text-align: center; ">Cube</h1><font><strong><span style="font-family: Arial; font-size: 12px; font-weight: bold; color: green; ">Time Limit: 2000/1000 MS (Java/Others)&nbsp;&nbsp;&nbsp;&nbsp;Memory Limit: 131072/65536 K (Java/Others)<br>Total Submission(s): 495&nbsp;&nbsp;&nbsp;&nbsp;Accepted Submission(s): 226<br></span></strong></font><br><br><div class="panel_title" align="left" style="height: 38px; background-image: url(http://acm.hdu.edu.cn/images/panel-title.png); background-attachment: initial; background-origin: initial; background-clip: initial; background-color: transparent; padding-top: 0px; padding-right: 14px; padding-bottom: 0px; padding-left: 14px; color: rgb(124, 169, 237); font-size: 18px; font-family: Arial; font-weight: bold; background-position: 0% 100%; background-repeat: no-repeat no-repeat; ">Problem Description</div><div class="panel_content" style="height: auto; background-image: url(http://acm.hdu.edu.cn/images/panel-content.png); background-attachment: initial; background-origin: initial; background-clip: initial; background-color: initial; margin-top: 0px; margin-right: 0px; margin-bottom: 0px; margin-left: 0px; padding-top: 0px; padding-right: 20px; padding-bottom: 0px; padding-left: 20px; font-size: 14px; font-family: 'Times New Roman'; text-align: left; background-repeat: no-repeat repeat; ">Given an N*N*N cube A, whose elements are either 0 or 1. A[i, j, k] means the number in the i-th row , j-th column and k-th layer. Initially we have A[i, j, k] = 0 (1 &lt;= i, j, k &lt;= N).&nbsp;<br>We define two operations, 1: &#8220;Not&#8221; operation that we change the A[i, j, k]=!A[i, j, k]. that means we change A[i, j, k] from 0-&gt;1,or 1-&gt;0. (x1&lt;=i&lt;=x2,y1&lt;=j&lt;=y2,z1&lt;=k&lt;=z2).<br>0: &#8220;Query&#8221; operation we want to get the value of A[i, j, k].<br></div><div class="panel_bottom" style="height: auto; margin-top: 0px; margin-right: 0px; margin-bottom: 0px; margin-left: 0px; background-image: url(http://acm.hdu.edu.cn/images/panel-bottom.png); background-attachment: initial; background-origin: initial; background-clip: initial; background-color: initial; background-position: 0% 0%; background-repeat: no-repeat no-repeat; ">&nbsp;</div><br><div class="panel_title" align="left" style="height: 38px; background-image: url(http://acm.hdu.edu.cn/images/panel-title.png); background-attachment: initial; background-origin: initial; background-clip: initial; background-color: transparent; padding-top: 0px; padding-right: 14px; padding-bottom: 0px; padding-left: 14px; color: rgb(124, 169, 237); font-size: 18px; font-family: Arial; font-weight: bold; background-position: 0% 100%; background-repeat: no-repeat no-repeat; ">Input</div><div class="panel_content" style="height: auto; background-image: url(http://acm.hdu.edu.cn/images/panel-content.png); background-attachment: initial; background-origin: initial; background-clip: initial; background-color: initial; margin-top: 0px; margin-right: 0px; margin-bottom: 0px; margin-left: 0px; padding-top: 0px; padding-right: 20px; padding-bottom: 0px; padding-left: 20px; font-size: 14px; font-family: 'Times New Roman'; text-align: left; background-repeat: no-repeat repeat; ">Multi-cases.<br>First line contains N and M, M lines follow indicating the operation below.<br>Each operation contains an X, the type of operation. 1: &#8220;Not&#8221; operation and 0: &#8220;Query&#8221; operation.<br>If X is 1, following x1, y1, z1, x2, y2, z2.<br>If X is 0, following x, y, z.<br></div><div class="panel_bottom" style="height: auto; margin-top: 0px; margin-right: 0px; margin-bottom: 0px; margin-left: 0px; background-image: url(http://acm.hdu.edu.cn/images/panel-bottom.png); background-attachment: initial; background-origin: initial; background-clip: initial; background-color: initial; background-position: 0% 0%; background-repeat: no-repeat no-repeat; ">&nbsp;</div><br><div class="panel_title" align="left" style="height: 38px; background-image: url(http://acm.hdu.edu.cn/images/panel-title.png); background-attachment: initial; background-origin: initial; background-clip: initial; background-color: transparent; padding-top: 0px; padding-right: 14px; padding-bottom: 0px; padding-left: 14px; color: rgb(124, 169, 237); font-size: 18px; font-family: Arial; font-weight: bold; background-position: 0% 100%; background-repeat: no-repeat no-repeat; ">Output</div><div class="panel_content" style="height: auto; background-image: url(http://acm.hdu.edu.cn/images/panel-content.png); background-attachment: initial; background-origin: initial; background-clip: initial; background-color: initial; margin-top: 0px; margin-right: 0px; margin-bottom: 0px; margin-left: 0px; padding-top: 0px; padding-right: 20px; padding-bottom: 0px; padding-left: 20px; font-size: 14px; font-family: 'Times New Roman'; text-align: left; background-repeat: no-repeat repeat; ">For each query output A[x, y, z] in one line. (1&lt;=n&lt;=100 sum of m &lt;=10000)</div><div class="panel_bottom" style="height: auto; margin-top: 0px; margin-right: 0px; margin-bottom: 0px; margin-left: 0px; background-image: url(http://acm.hdu.edu.cn/images/panel-bottom.png); background-attachment: initial; background-origin: initial; background-clip: initial; background-color: initial; background-position: 0% 0%; background-repeat: no-repeat no-repeat; ">&nbsp;</div><br><div class="panel_title" align="left" style="height: 38px; background-image: url(http://acm.hdu.edu.cn/images/panel-title.png); background-attachment: initial; background-origin: initial; background-clip: initial; background-color: transparent; padding-top: 0px; padding-right: 14px; padding-bottom: 0px; padding-left: 14px; color: rgb(124, 169, 237); font-size: 18px; font-family: Arial; font-weight: bold; background-position: 0% 100%; background-repeat: no-repeat no-repeat; ">Sample Input</div><div class="panel_content" style="height: auto; background-image: url(http://acm.hdu.edu.cn/images/panel-content.png); background-attachment: initial; background-origin: initial; background-clip: initial; background-color: initial; margin-top: 0px; margin-right: 0px; margin-bottom: 0px; margin-left: 0px; padding-top: 0px; padding-right: 20px; padding-bottom: 0px; padding-left: 20px; font-size: 14px; font-family: 'Times New Roman'; text-align: left; background-repeat: no-repeat repeat; "><pre style="margin-top: 0px; margin-right: 0px; margin-bottom: 0px; margin-left: 0px; font-size: 14px; "><div style="font-family: 'Courier New', Courier, monospace; ">2 5
1 1 1 1  1 1 1
0 1 1 1
1 1 1 1  2 2 2
0 1 1 1
0 2 2 2</div></pre></div><div class="panel_bottom" style="height: auto; margin-top: 0px; margin-right: 0px; margin-bottom: 0px; margin-left: 0px; background-image: url(http://acm.hdu.edu.cn/images/panel-bottom.png); background-attachment: initial; background-origin: initial; background-clip: initial; background-color: initial; background-position: 0% 0%; background-repeat: no-repeat no-repeat; ">&nbsp;</div><br><div class="panel_title" align="left" style="height: 38px; background-image: url(http://acm.hdu.edu.cn/images/panel-title.png); background-attachment: initial; background-origin: initial; background-clip: initial; background-color: transparent; padding-top: 0px; padding-right: 14px; padding-bottom: 0px; padding-left: 14px; color: rgb(124, 169, 237); font-size: 18px; font-family: Arial; font-weight: bold; background-position: 0% 100%; background-repeat: no-repeat no-repeat; ">Sample Output</div><div class="panel_content" style="height: auto; background-image: url(http://acm.hdu.edu.cn/images/panel-content.png); background-attachment: initial; background-origin: initial; background-clip: initial; background-color: initial; margin-top: 0px; margin-right: 0px; margin-bottom: 0px; margin-left: 0px; padding-top: 0px; padding-right: 20px; padding-bottom: 0px; padding-left: 20px; font-size: 14px; font-family: 'Times New Roman'; text-align: left; background-repeat: no-repeat repeat; "><pre style="margin-top: 0px; margin-right: 0px; margin-bottom: 0px; margin-left: 0px; font-size: 14px; "><div style="font-family: 'Courier New', Courier, monospace; ">1
0
1</div></pre></div><div class="panel_bottom" style="height: auto; margin-top: 0px; margin-right: 0px; margin-bottom: 0px; margin-left: 0px; background-image: url(http://acm.hdu.edu.cn/images/panel-bottom.png); background-attachment: initial; background-origin: initial; background-clip: initial; background-color: initial; background-position: 0% 0%; background-repeat: no-repeat no-repeat; ">&nbsp;</div></span><p style="margin-top: 5px; margin-right: auto; margin-bottom: 5px; margin-left: auto; text-indent: 0px; ">题目分析 :</p><p style="margin-top: 5px; margin-right: auto; margin-bottom: 5px; margin-left: auto; text-indent: 0px; ">&nbsp;&nbsp; &nbsp; &nbsp;更新区间, 查询一个点, 三维线段树 直接无视.........数据不是很强, 所以 直接暴力就可以过, 过完发现自己的时间 在700MS 左右, 看了下rank,</p><p style="margin-top: 5px; margin-right: auto; margin-bottom: 5px; margin-left: auto; text-indent: 0px; ">小A 榜首..... 时间竟然才62MS<img src="http://www.cnblogs.com/Emoticons/baimantou/134950312.gif">....果然还是要用三维树状数组来加速啊 . 不过一直没理解 用 树状数组 解决这题的思路, 今早上终于明白了<img src="http://www.cnblogs.com/Emoticons/baimantou/22571567.gif">.</p><p style="margin-top: 5px; margin-right: auto; margin-bottom: 5px; margin-left: auto; text-indent: 0px; ">画个图先 :</p><p style="margin-top: 5px; margin-right: auto; margin-bottom: 5px; margin-left: auto; text-indent: 0px; ">&nbsp;&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;<img src="http://www.cnblogs.com/images/cnblogs_com/miyu/HDU_3485.JPG" width="422" height="193" alt="">&nbsp;</p><p style="margin-top: 5px; margin-right: auto; margin-bottom: 5px; margin-left: auto; text-indent: 0px; ">好了 , 看代码:</p><p style="margin-top: 5px; margin-right: auto; margin-bottom: 5px; margin-left: auto; text-indent: 0px; ">树状数组代码 :</p><p style="margin-top: 5px; margin-right: auto; margin-bottom: 5px; margin-left: auto; text-indent: 0px; ">&nbsp;<span style="font-family: 'Courier New'; line-height: normal; font-size: 12px; color: rgb(0, 128, 0); white-space: pre; ">/*</span></p><span style="font-family: 'Times New Roman'; line-height: normal; font-size: 12px; "><div style="padding-top: 10px; padding-right: 10px; padding-bottom: 10px; padding-left: 10px; "><pre style="font-family: 'Courier New'; text-align: left; "><font color="green">Mail to   : miyubai@gamil.com
My Blog   : www.baiyun.me
Link      : http://www.cnblogs.com/MiYu  || http://www.cppblog.com/MiYu
Author By : MiYu
Test      : 1
Complier  : g++ mingw32-3.4.2
Program   : HDU_3584
Doc Name  : Cube
*/</font><font color="green">
//#pragma warning( disable:4789 )
</font><font color="blue">#include &lt;iostream&gt;
#include &lt;fstream&gt;
#include &lt;sstream&gt;
#include &lt;algorithm&gt;
#include &lt;string&gt;
#include &lt;set&gt;
#include &lt;map&gt;
#include &lt;utility&gt;
#include &lt;queue&gt;
#include &lt;stack&gt;
#include &lt;list&gt;
#include &lt;vector&gt;
#include &lt;cstdio&gt;
#include &lt;cstdlib&gt;
#include &lt;cstring&gt;
#include &lt;cmath&gt;
#include &lt;ctime&gt;
</font><strong><font color="#0000FF">using namespace</font></strong> std<strong><font color="#FF00FF">;</font></strong><strong><font color="#0000FF">
inline</font></strong><strong><font color="blue"> bool</font></strong> scan_d<strong><font color="#FF00FF">(</font></strong><strong><font color="blue">int</font></strong><strong><font color="#FF00FF"> &amp;</font></strong>num<strong><font color="#FF00FF">)</font></strong><font color="green">  //整数输入
</font><strong><font color="#FF00FF">{</font></strong><strong><font color="blue">
        char</font></strong> in<strong><font color="#FF00FF">;</font></strong><strong><font color="blue">bool</font></strong> IsN<strong><font color="#FF00FF">=</font></strong><font color="#CC3300">false</font><strong><font color="#FF00FF">;</font></strong>
        in<strong><font color="#FF00FF">=</font></strong>getchar<strong><font color="#FF00FF">();</font></strong><strong><font color="#0000FF">
        if</font></strong><strong><font color="#FF00FF">(</font></strong>in<strong><font color="#FF00FF">==</font></strong>EOF<strong><font color="#FF00FF">)</font></strong><strong><font color="#0000FF"> return</font></strong><font color="#CC3300"> false</font><strong><font color="#FF00FF">;</font></strong><strong><font color="#0000FF">
        while</font></strong><strong><font color="#FF00FF">(</font></strong>in<strong><font color="#FF00FF">!=</font></strong><font color="green">'-'</font><strong><font color="#FF00FF">&amp;&amp;(</font></strong>in<strong><font color="#FF00FF">&lt;</font></strong><font color="green">'0'</font><strong><font color="#FF00FF">||</font></strong>in<strong><font color="#FF00FF">&gt;</font></strong><font color="green">'9'</font><strong><font color="#FF00FF">))</font></strong> in<strong><font color="#FF00FF">=</font></strong>getchar<strong><font color="#FF00FF">();</font></strong><strong><font color="#0000FF">
        if</font></strong><strong><font color="#FF00FF">(</font></strong>in<strong><font color="#FF00FF">==</font></strong><font color="green">'-'</font><strong><font color="#FF00FF">){</font></strong> IsN<strong><font color="#FF00FF">=</font></strong><font color="#CC3300">true</font><strong><font color="#FF00FF">;</font></strong>num<strong><font color="#FF00FF">=</font></strong><font color="#CC3300">0</font><strong><font color="#FF00FF">;}</font></strong><strong><font color="#0000FF">
        else</font></strong> num<strong><font color="#FF00FF">=</font></strong>in<strong><font color="#FF00FF">-</font></strong><font color="green">'0'</font><strong><font color="#FF00FF">;</font></strong><strong><font color="#0000FF">
        while</font></strong><strong><font color="#FF00FF">(</font></strong>in<strong><font color="#FF00FF">=</font></strong>getchar<strong><font color="#FF00FF">(),</font></strong>in<strong><font color="#FF00FF">&gt;=</font></strong><font color="green">'0'</font><strong><font color="#FF00FF">&amp;&amp;</font></strong>in<strong><font color="#FF00FF">&lt;=</font></strong><font color="green">'9'</font><strong><font color="#FF00FF">){</font></strong>
                num<strong><font color="#FF00FF">*=</font></strong><font color="#CC3300">10</font><strong><font color="#FF00FF">,</font></strong>num<strong><font color="#FF00FF">+=</font></strong>in<strong><font color="#FF00FF">-</font></strong><font color="green">'0'</font><strong><font color="#FF00FF">;
        }</font></strong><strong><font color="#0000FF">
        if</font></strong><strong><font color="#FF00FF">(</font></strong>IsN<strong><font color="#FF00FF">)</font></strong> num<strong><font color="#FF00FF">=-</font></strong>num<strong><font color="#FF00FF">;</font></strong><strong><font color="#0000FF">
        return</font></strong><font color="#CC3300"> true</font><strong><font color="#FF00FF">;
}</font></strong><strong><font color="#0000FF">
const</font></strong><strong><font color="blue"> int</font></strong> MAXN<strong><font color="#FF00FF"> =</font></strong><font color="#CC3300"> 105</font><strong><font color="#FF00FF">;</font></strong><strong><font color="blue">
int</font></strong> mat<strong><font color="#FF00FF">[</font></strong>MAXN<strong><font color="#FF00FF">][</font></strong>MAXN<strong><font color="#FF00FF">][</font></strong>MAXN<strong><font color="#FF00FF">];</font></strong><strong><font color="blue">
int</font></strong> low<strong><font color="#FF00FF">[</font></strong>MAXN<strong><font color="#FF00FF">];</font></strong><strong><font color="blue">
int</font></strong> i<strong><font color="#FF00FF">,</font></strong> j<strong><font color="#FF00FF">,</font></strong> k<strong><font color="#FF00FF">;</font></strong><strong><font color="blue">
void</font></strong> setLow<strong><font color="#FF00FF"> () {</font></strong><strong><font color="#0000FF">
     for</font></strong><strong><font color="#FF00FF"> (</font></strong> i<strong><font color="#FF00FF"> =</font></strong><font color="#CC3300"> 1</font><strong><font color="#FF00FF">;</font></strong> i<strong><font color="#FF00FF"> &lt;=</font></strong> MAXN<strong><font color="#FF00FF">; ++</font></strong> i<strong><font color="#FF00FF"> )</font></strong> low<strong><font color="#FF00FF">[</font></strong>i<strong><font color="#FF00FF">] =</font></strong> i<strong><font color="#FF00FF"> &amp; (-</font></strong> i<strong><font color="#FF00FF">);
}</font></strong><strong><font color="blue">
void</font></strong> modify<strong><font color="#FF00FF"> (</font></strong><strong><font color="blue"> int</font></strong> x<strong><font color="#FF00FF">,</font></strong><strong><font color="blue"> int</font></strong> y<strong><font color="#FF00FF">,</font></strong><strong><font color="blue"> int</font></strong> z<strong><font color="#FF00FF"> ) {</font></strong><strong><font color="#0000FF">
     for</font></strong><strong><font color="#FF00FF"> (</font></strong> i<strong><font color="#FF00FF"> =</font></strong> x<strong><font color="#FF00FF">;</font></strong> i<strong><font color="#FF00FF"> &lt;=</font></strong> MAXN<strong><font color="#FF00FF">;</font></strong> i<strong><font color="#FF00FF"> +=</font></strong> low<strong><font color="#FF00FF">[</font></strong>i<strong><font color="#FF00FF">] ) {</font></strong><strong><font color="#0000FF">
         for</font></strong><strong><font color="#FF00FF"> (</font></strong> j<strong><font color="#FF00FF"> =</font></strong> y<strong><font color="#FF00FF">;</font></strong> j<strong><font color="#FF00FF"> &lt;=</font></strong> MAXN<strong><font color="#FF00FF">;</font></strong> j<strong><font color="#FF00FF"> +=</font></strong> low<strong><font color="#FF00FF">[</font></strong>j<strong><font color="#FF00FF">] ) {</font></strong><strong><font color="#0000FF">
             for</font></strong><strong><font color="#FF00FF"> (</font></strong> k<strong><font color="#FF00FF"> =</font></strong> z<strong><font color="#FF00FF">;</font></strong> k<strong><font color="#FF00FF"> &lt;=</font></strong> MAXN<strong><font color="#FF00FF">;</font></strong> k<strong><font color="#FF00FF"> +=</font></strong> low<strong><font color="#FF00FF">[</font></strong>k<strong><font color="#FF00FF">] )</font></strong>
                 mat<strong><font color="#FF00FF">[</font></strong>i<strong><font color="#FF00FF">][</font></strong>j<strong><font color="#FF00FF">][</font></strong>k<strong><font color="#FF00FF">] ^=</font></strong><font color="#CC3300"> 1</font><strong><font color="#FF00FF">;   
         }    
     }    
}</font></strong><strong><font color="blue">
int</font></strong> query<strong><font color="#FF00FF"> (</font></strong><strong><font color="blue"> int</font></strong> x<strong><font color="#FF00FF">,</font></strong><strong><font color="blue"> int</font></strong> y<strong><font color="#FF00FF">,</font></strong><strong><font color="blue"> int</font></strong> z<strong><font color="#FF00FF"> ) {</font></strong><strong><font color="blue">
     int</font></strong> sum<strong><font color="#FF00FF"> =</font></strong><font color="#CC3300"> 0</font><strong><font color="#FF00FF">;</font></strong><strong><font color="#0000FF">
     for</font></strong><strong><font color="#FF00FF"> (</font></strong> i<strong><font color="#FF00FF"> =</font></strong> x<strong><font color="#FF00FF">;</font></strong> i<strong><font color="#FF00FF"> &gt;</font></strong><font color="#CC3300"> 0</font><strong><font color="#FF00FF">;</font></strong> i<strong><font color="#FF00FF"> ^=</font></strong> low<strong><font color="#FF00FF">[</font></strong>i<strong><font color="#FF00FF">] ) {</font></strong><strong><font color="#0000FF">
         for</font></strong><strong><font color="#FF00FF"> (</font></strong> j<strong><font color="#FF00FF"> =</font></strong> y<strong><font color="#FF00FF">;</font></strong> j<strong><font color="#FF00FF"> &gt;</font></strong><font color="#CC3300"> 0</font><strong><font color="#FF00FF">;</font></strong> j<strong><font color="#FF00FF"> ^=</font></strong> low<strong><font color="#FF00FF">[</font></strong>j<strong><font color="#FF00FF">] ) {</font></strong><strong><font color="#0000FF">
             for</font></strong><strong><font color="#FF00FF"> (</font></strong> k<strong><font color="#FF00FF"> =</font></strong> z<strong><font color="#FF00FF">;</font></strong> k<strong><font color="#FF00FF"> &gt;</font></strong><font color="#CC3300"> 0</font><strong><font color="#FF00FF">;</font></strong> k<strong><font color="#FF00FF"> ^=</font></strong> low<strong><font color="#FF00FF">[</font></strong>k<strong><font color="#FF00FF">] )</font></strong>
                 sum<strong><font color="#FF00FF"> +=</font></strong> mat<strong><font color="#FF00FF">[</font></strong>i<strong><font color="#FF00FF">][</font></strong>j<strong><font color="#FF00FF">][</font></strong>k<strong><font color="#FF00FF">];    
         }    
     }</font></strong><strong><font color="#0000FF">    
     return</font></strong> sum<strong><font color="#FF00FF"> &amp;</font></strong><font color="#CC3300"> 1</font><strong><font color="#FF00FF">;
}</font></strong><strong><font color="blue">
int</font></strong><strong><font color="#0000FF"> main</font></strong><strong><font color="#FF00FF"> ()
{</font></strong>
    setLow<strong><font color="#FF00FF"> ();</font></strong><strong><font color="blue">
    int</font></strong> N<strong><font color="#FF00FF">,</font></strong> M<strong><font color="#FF00FF">;</font></strong><strong><font color="#0000FF">
    while</font></strong><strong><font color="#FF00FF"> (</font></strong> scan_d<strong><font color="#FF00FF"> (</font></strong> N<strong><font color="#FF00FF"> ) &amp;&amp;</font></strong> scan_d<strong><font color="#FF00FF"> (</font></strong> M<strong><font color="#FF00FF"> ) ) {</font></strong>
          memset<strong><font color="#FF00FF"> (</font></strong> mat<strong><font color="#FF00FF">,</font></strong><font color="#CC3300"> 0</font><strong><font color="#FF00FF">,</font></strong><strong><font color="#0000FF"> sizeof</font></strong><strong><font color="#FF00FF"> (</font></strong> mat<strong><font color="#FF00FF"> ) );</font></strong><strong><font color="#0000FF">
          while</font></strong><strong><font color="#FF00FF"> (</font></strong> M<strong><font color="#FF00FF"> -- ) {</font></strong><strong><font color="blue">
                int</font></strong> x1<strong><font color="#FF00FF">,</font></strong>y1<strong><font color="#FF00FF">,</font></strong>z1<strong><font color="#FF00FF">,</font></strong>x2<strong><font color="#FF00FF">,</font></strong>y2<strong><font color="#FF00FF">,</font></strong>z2<strong><font color="#FF00FF">;</font></strong><strong><font color="blue">
                int</font></strong> s<strong><font color="#FF00FF">;</font></strong>  scan_d<strong><font color="#FF00FF"> (</font></strong> s<strong><font color="#FF00FF"> );</font></strong><strong><font color="#0000FF"> 
                switch</font></strong><strong><font color="#FF00FF"> (</font></strong> s<strong><font color="#FF00FF"> ) {</font></strong><strong><font color="#0000FF">
                       case</font></strong><font color="#CC3300"> 1</font><strong><font color="#FF00FF">:</font></strong>
                            scan_d<strong><font color="#FF00FF"> (</font></strong> x1<strong><font color="#FF00FF"> );</font></strong> scan_d<strong><font color="#FF00FF"> (</font></strong> y1<strong><font color="#FF00FF"> );</font></strong> scan_d<strong><font color="#FF00FF"> (</font></strong> z1<strong><font color="#FF00FF"> );</font></strong> 
                            scan_d<strong><font color="#FF00FF"> (</font></strong> x2<strong><font color="#FF00FF"> );</font></strong> scan_d<strong><font color="#FF00FF"> (</font></strong> y2<strong><font color="#FF00FF"> );</font></strong> scan_d<strong><font color="#FF00FF"> (</font></strong> z2<strong><font color="#FF00FF"> );</font></strong>
                            modify<strong><font color="#FF00FF"> (</font></strong> x1<strong><font color="#FF00FF">,</font></strong>y1<strong><font color="#FF00FF">,</font></strong>z1<strong><font color="#FF00FF"> );</font></strong>    modify<strong><font color="#FF00FF"> (</font></strong> x1<strong><font color="#FF00FF">,</font></strong>y1<strong><font color="#FF00FF">,</font></strong>z2<strong><font color="#FF00FF">+</font></strong><font color="#CC3300">1</font><strong><font color="#FF00FF"> );</font></strong>
                            modify<strong><font color="#FF00FF"> (</font></strong> x2<strong><font color="#FF00FF">+</font></strong><font color="#CC3300">1</font><strong><font color="#FF00FF">,</font></strong>y1<strong><font color="#FF00FF">,</font></strong>z1<strong><font color="#FF00FF"> );</font></strong>    modify<strong><font color="#FF00FF"> (</font></strong> x2<strong><font color="#FF00FF">+</font></strong><font color="#CC3300">1</font><strong><font color="#FF00FF">,</font></strong>y1<strong><font color="#FF00FF">,</font></strong>z2<strong><font color="#FF00FF">+</font></strong><font color="#CC3300">1</font><strong><font color="#FF00FF"> );</font></strong>
                            modify<strong><font color="#FF00FF"> (</font></strong> x1<strong><font color="#FF00FF">,</font></strong>y2<strong><font color="#FF00FF">+</font></strong><font color="#CC3300">1</font><strong><font color="#FF00FF">,</font></strong>z1<strong><font color="#FF00FF"> );</font></strong>    modify<strong><font color="#FF00FF"> (</font></strong> x2<strong><font color="#FF00FF">+</font></strong><font color="#CC3300">1</font><strong><font color="#FF00FF">,</font></strong>y2<strong><font color="#FF00FF">+</font></strong><font color="#CC3300">1</font><strong><font color="#FF00FF">,</font></strong>z1<strong><font color="#FF00FF"> );</font></strong>
                            modify<strong><font color="#FF00FF"> (</font></strong> x2<strong><font color="#FF00FF">+</font></strong><font color="#CC3300">1</font><strong><font color="#FF00FF">,</font></strong>y2<strong><font color="#FF00FF">+</font></strong><font color="#CC3300">1</font><strong><font color="#FF00FF">,</font></strong>z2<strong><font color="#FF00FF">+</font></strong><font color="#CC3300">1</font><strong><font color="#FF00FF"> );</font></strong>    modify<strong><font color="#FF00FF"> (</font></strong> x1<strong><font color="#FF00FF">,</font></strong>y2<strong><font color="#FF00FF">+</font></strong><font color="#CC3300">1</font><strong><font color="#FF00FF">,</font></strong>z2<strong><font color="#FF00FF">+</font></strong><font color="#CC3300">1</font><strong><font color="#FF00FF"> );</font></strong><strong><font color="#0000FF"> 
                            break</font></strong><strong><font color="#FF00FF">;</font></strong><strong><font color="#0000FF">
                       case</font></strong><font color="#CC3300"> 0</font><strong><font color="#FF00FF">:</font></strong>
                            scan_d<strong><font color="#FF00FF"> (</font></strong> x1<strong><font color="#FF00FF"> );</font></strong> scan_d<strong><font color="#FF00FF"> (</font></strong> y1<strong><font color="#FF00FF"> );</font></strong> scan_d<strong><font color="#FF00FF"> (</font></strong> z1<strong><font color="#FF00FF"> );</font></strong>
                            printf<strong><font color="#FF00FF"> (</font></strong><font color="green"> "%d\n"</font><strong><font color="#FF00FF">,</font></strong> query<strong><font color="#FF00FF"> (</font></strong> x1<strong><font color="#FF00FF">,</font></strong>y1<strong><font color="#FF00FF">,</font></strong>z1<strong><font color="#FF00FF"> ) );      
                }
          }           
    }</font></strong><strong><font color="#0000FF">
    return</font></strong><font color="#CC3300"> 0</font><strong><font color="#FF00FF">;
}</font></strong>
</pre><div><strong><font color="#FF00FF"><br></font></strong></div><p style="margin-top: 5px; margin-right: auto; margin-bottom: 5px; margin-left: auto; text-indent: 0px; ">暴力代码 :<br></p><div style="padding-top: 10px; padding-right: 10px; padding-bottom: 10px; padding-left: 10px; "><pre style="font-family: 'Courier New'; text-align: left; "><font color="green">/*
Mail to   : miyubai@gamil.com
My Blog   : www.baiyun.me
Link      : http://www.cnblogs.com/MiYu  || http://www.cppblog.com/MiYu
Author By : MiYu
Test      : 1
Complier  : g++ mingw32-3.4.2
Program   :
Doc Name  :
*/</font><font color="green">
//#pragma warning( disable:4789 )
</font><font color="blue">#include &lt;iostream&gt;
#include &lt;fstream&gt;
#include &lt;sstream&gt;
#include &lt;algorithm&gt;
#include &lt;string&gt;
#include &lt;set&gt;
#include &lt;map&gt;
#include &lt;utility&gt;
#include &lt;queue&gt;
#include &lt;stack&gt;
#include &lt;list&gt;
#include &lt;vector&gt;
#include &lt;cstdio&gt;
#include &lt;cstdlib&gt;
#include &lt;cstring&gt;
#include &lt;cmath&gt;
#include &lt;ctime&gt;
</font><strong><font color="#0000FF">using namespace</font></strong> std<strong><font color="#FF00FF">;</font></strong><strong><font color="#0000FF">
struct</font></strong> node<strong><font color="#FF00FF"> {</font></strong><strong><font color="blue">  
    int</font></strong> x1<strong><font color="#FF00FF">,</font></strong> x2<strong><font color="#FF00FF">,</font></strong> y1<strong><font color="#FF00FF">,</font></strong> y2<strong><font color="#FF00FF">,</font></strong> z1<strong><font color="#FF00FF">,</font></strong> z2<strong><font color="#FF00FF">; 
}</font></strong>cube<strong><font color="#FF00FF">[</font></strong><font color="#CC3300">10010</font><strong><font color="#FF00FF">];</font></strong><strong><font color="blue">   
  
int</font></strong><strong><font color="#0000FF"> main</font></strong><strong><font color="#FF00FF">()  
{</font></strong><strong><font color="blue">  
    int</font></strong> N<strong><font color="#FF00FF">,</font></strong> M<strong><font color="#FF00FF">;</font></strong><strong><font color="blue">  
    int</font></strong> x<strong><font color="#FF00FF">,</font></strong> y<strong><font color="#FF00FF">,</font></strong> z<strong><font color="#FF00FF">;</font></strong><strong><font color="#0000FF">
    while</font></strong><strong><font color="#FF00FF"> (</font></strong> scanf<strong><font color="#FF00FF"> (</font></strong><font color="green"> "%d%d"</font><strong><font color="#FF00FF">,&amp;</font></strong>N<strong><font color="#FF00FF">,&amp;</font></strong>M<strong><font color="#FF00FF"> ) !=</font></strong> EOF<strong><font color="#FF00FF"> )  {</font></strong><strong><font color="blue">  
        int</font></strong> cnt<strong><font color="#FF00FF"> =</font></strong><font color="#CC3300"> 0</font><strong><font color="#FF00FF">;</font></strong><strong><font color="#0000FF">  
        while</font></strong><strong><font color="#FF00FF"> (</font></strong> M<strong><font color="#FF00FF"> -- )  
        {</font></strong><strong><font color="blue">  
            int</font></strong> ask<strong><font color="#FF00FF">;</font></strong>  
            scanf<strong><font color="#FF00FF"> (</font></strong><font color="green"> "%d"</font><strong><font color="#FF00FF">, &amp;</font></strong>ask<strong><font color="#FF00FF"> );</font></strong><strong><font color="#0000FF">  
            switch</font></strong><strong><font color="#FF00FF"> (</font></strong> ask<strong><font color="#FF00FF"> ) {</font></strong><strong><font color="#0000FF">
                case</font></strong><font color="#CC3300"> 1</font><strong><font color="#FF00FF">:</font></strong>   
                    scanf<strong><font color="#FF00FF"> (</font></strong><font color="green"> "%d%d%d%d%d%d"</font><strong><font color="#FF00FF">, &amp;</font></strong>cube<strong><font color="#FF00FF">[</font></strong>cnt<strong><font color="#FF00FF">].</font></strong>x1<strong><font color="#FF00FF">,&amp;</font></strong>cube<strong><font color="#FF00FF">[</font></strong>cnt<strong><font color="#FF00FF">].</font></strong>y1<strong><font color="#FF00FF">,
                                            &amp;</font></strong>cube<strong><font color="#FF00FF">[</font></strong>cnt<strong><font color="#FF00FF">].</font></strong>z1<strong><font color="#FF00FF">,&amp;</font></strong>cube<strong><font color="#FF00FF">[</font></strong>cnt<strong><font color="#FF00FF">].</font></strong>x2<strong><font color="#FF00FF">,
                                            &amp;</font></strong>cube<strong><font color="#FF00FF">[</font></strong>cnt<strong><font color="#FF00FF">].</font></strong>y2<strong><font color="#FF00FF">,&amp;</font></strong>cube<strong><font color="#FF00FF">[</font></strong>cnt<strong><font color="#FF00FF">].</font></strong>z2<strong><font color="#FF00FF"> );  
                    ++</font></strong> cnt<strong><font color="#FF00FF">;</font></strong><strong><font color="#0000FF">  
                    break</font></strong><strong><font color="#FF00FF">;</font></strong><strong><font color="#0000FF">
                case</font></strong><font color="#CC3300"> 0</font><strong><font color="#FF00FF">:</font></strong>
                    scanf<strong><font color="#FF00FF"> (</font></strong><font color="green"> "%d%d%d"</font><strong><font color="#FF00FF">, &amp;</font></strong>x<strong><font color="#FF00FF">, &amp;</font></strong>y<strong><font color="#FF00FF">, &amp;</font></strong>z<strong><font color="#FF00FF">);</font></strong><strong><font color="blue">  
                    int</font></strong> count<strong><font color="#FF00FF"> =</font></strong><font color="#CC3300"> 0</font><strong><font color="#FF00FF">;</font></strong><strong><font color="#0000FF">  
                    for</font></strong><strong><font color="#FF00FF"> (</font></strong><strong><font color="blue"> int</font></strong> i<strong><font color="#FF00FF"> =</font></strong><font color="#CC3300"> 0</font><strong><font color="#FF00FF">;</font></strong> i<strong><font color="#FF00FF"> !=</font></strong> cnt<strong><font color="#FF00FF">; ++</font></strong> i<strong><font color="#FF00FF"> )</font></strong><strong><font color="#0000FF">  
                        if</font></strong><strong><font color="#FF00FF"> (</font></strong> cube<strong><font color="#FF00FF">[</font></strong>i<strong><font color="#FF00FF">].</font></strong>x1<strong><font color="#FF00FF"> &lt;=</font></strong> x<strong><font color="#FF00FF"> &amp;&amp;</font></strong> x<strong><font color="#FF00FF"> &lt;=</font></strong> cube<strong><font color="#FF00FF">[</font></strong>i<strong><font color="#FF00FF">].</font></strong>x2<strong><font color="#FF00FF"> &amp;&amp;</font></strong> 
                             cube<strong><font color="#FF00FF">[</font></strong>i<strong><font color="#FF00FF">].</font></strong>y1<strong><font color="#FF00FF"> &lt;=</font></strong> y<strong><font color="#FF00FF"> &amp;&amp;</font></strong> y<strong><font color="#FF00FF"> &lt;=</font></strong> cube<strong><font color="#FF00FF">[</font></strong>i<strong><font color="#FF00FF">].</font></strong>y2<strong><font color="#FF00FF"> &amp;&amp;</font></strong> 
                             cube<strong><font color="#FF00FF">[</font></strong>i<strong><font color="#FF00FF">].</font></strong>z1<strong><font color="#FF00FF"> &lt;=</font></strong> z<strong><font color="#FF00FF"> &amp;&amp;</font></strong> z<strong><font color="#FF00FF"> &lt;=</font></strong> cube<strong><font color="#FF00FF">[</font></strong>i<strong><font color="#FF00FF">].</font></strong>z2<strong><font color="#FF00FF"> )</font></strong>  
                                    count<strong><font color="#FF00FF"> ^=</font></strong><font color="#CC3300"> 1</font><strong><font color="#FF00FF">;;</font></strong>  
                    puts<strong><font color="#FF00FF"> (</font></strong> count<strong><font color="#FF00FF"> ?</font></strong><font color="green"> "1"</font><strong><font color="#FF00FF"> :</font></strong><font color="green"> "0"</font><strong><font color="#FF00FF"> ); 
            }  
        }  
    }</font></strong><strong><font color="#0000FF">  
    return</font></strong><font color="#CC3300"> 0</font><strong><font color="#FF00FF">;  
}</font></strong>  
</pre></div><p style="margin-top: 5px; margin-right: auto; margin-bottom: 5px; margin-left: auto; text-indent: 0px; ">&nbsp;</p></div></span></span><img src ="http://www.cppblog.com/MiYu/aggbug/133577.html" width = "1" height = "1" /><br><br><div align=right><a style="text-decoration:none;" href="http://www.cppblog.com/MiYu/" target="_blank">MiYu</a> 2010-11-14 10:35 <a href="http://www.cppblog.com/MiYu/archive/2010/11/14/133577.html#Feedback" target="_blank" style="text-decoration:none;">发表评论</a></div>]]></description></item><item><title>常用算法讲解---迭代法</title><link>http://www.cppblog.com/MiYu/archive/2010/08/27/124963.html</link><dc:creator>MiYu</dc:creator><author>MiYu</author><pubDate>Fri, 27 Aug 2010 11:18:00 GMT</pubDate><guid>http://www.cppblog.com/MiYu/archive/2010/08/27/124963.html</guid><wfw:comment>http://www.cppblog.com/MiYu/comments/124963.html</wfw:comment><comments>http://www.cppblog.com/MiYu/archive/2010/08/27/124963.html#Feedback</comments><slash:comments>0</slash:comments><wfw:commentRss>http://www.cppblog.com/MiYu/comments/commentRss/124963.html</wfw:commentRss><trackback:ping>http://www.cppblog.com/MiYu/services/trackbacks/124963.html</trackback:ping><description><![CDATA[<p style="margin-top: 5px; margin-right: auto; margin-bottom: 5px; margin-left: auto; text-indent: 0px; font-family: verdana, 'courier new'; font-size: 14px; line-height: 21px; ">MiYu原创, 转帖请注明 : 转载自&nbsp;<a href="http://www.cnblogs.com/MiYu"><font  color="#000000">______________白白の屋</font></a>&nbsp;&nbsp;<img src="http://www.cnblogs.com/Emoticons/baimantou/223332482.gif" alt="">&nbsp;&nbsp;</p><p style="margin-top: 5px; margin-right: auto; margin-bottom: 5px; margin-left: auto; text-indent: 0px; font-family: verdana, 'courier new'; font-size: 14px; line-height: 21px; ">&nbsp;</p><p style="margin-top: 5px; margin-right: auto; margin-bottom: 5px; margin-left: auto; text-indent: 0px; font-family: verdana, 'courier new'; font-size: 14px; line-height: 21px; ">&nbsp;<span  style="font-family: 'Courier New'; font-size: 13px; "><img src="http://images.cnblogs.com/OutliningIndicators/ExpandedBlockStart.gif" class="code_img_opened" id="code_img_opened_f92fe2de-3c49-4e47-a431-e6cc4efc2d35" style="vertical-align: middle; padding-right: 5px; "><span class="cnblogs_code_collapse" style="border-right-color: rgb(128, 128, 128); border-right-width: 1px; border-right-style: solid; border-top-color: rgb(128, 128, 128); border-top-width: 1px; border-top-style: solid; border-left-color: rgb(128, 128, 128); border-left-width: 1px; border-left-style: solid; border-bottom-color: rgb(128, 128, 128); border-bottom-width: 1px; border-bottom-style: solid; background-color: rgb(255, 255, 255); padding-top: 2px; padding-right: 2px; padding-bottom: 2px; padding-left: 2px; ">代码</span></span></p><div class="cnblogs_code" style="background-color: rgb(245, 245, 245); font-family: 'Courier New'; font-size: 13px; border-left-color: rgb(204, 204, 204); padding-top: 5px; padding-right: 5px; padding-bottom: 5px; padding-left: 5px; word-break: break-all; overflow-x: auto; overflow-y: auto; line-height: 21px; "><div id="cnblogs_code_open_f92fe2de-3c49-4e47-a431-e6cc4efc2d35"><div><span style="font-family: 'Courier New'; color: rgb(0, 0, 0); ">要使计算机能完成人们预定的工作，首先必须为如何完成预定的工作设计一个算法，然后再根据算法编写程序。计算机程序要对问题的每个对象和处理规则给出正确详尽的描述，其中程序的数据结构和变量用来描述问题的对象，程序结构、函数和语句用来描述问题的算法。算法数据结构是程序的两个重要方面。<br>算法是问题求解过程的精确描述，一个算法由有限条可完全机械地执行的、有确定结果的指令组成。指令正确地描述了要完成的任务和它们被执行的顺序。计算机按算法指令所描述的顺序执行算法的指令能在有限的步骤内终止，或终止于给出问题的解，或终止于指出问题对此输入数据无解。<br>通常求解一个问题可能会有多种算法可供选择，选择的主要标准是算法的正确性和可靠性，简单性和易理解性。其次是算法所需要的存储空间少和执行更快等。<br>算法设计是一件非常困难的工作，经常采用的算法设计技术主要有迭代法、穷举搜索法、递推法、贪婪法、回溯法、分治法、动态规划法等等。另外，为了更简洁的形式设计和藐视算法，在算法设计时又常常采用递归技术，用递归描述算法。<br>一、迭代法&nbsp;<br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;迭代法是用于求方程或方程组近似根的一种常用的算法设计方法。设方程为f(x)</span><span style="font-family: 'Courier New'; color: rgb(0, 0, 0); ">=</span><span style="font-family: 'Courier New'; color: rgb(128, 0, 128); ">0</span><span style="font-family: 'Courier New'; color: rgb(0, 0, 0); ">，用某种数学方法导出等价的形式x</span><span style="font-family: 'Courier New'; color: rgb(0, 0, 0); ">=</span><span style="font-family: 'Courier New'; color: rgb(0, 0, 0); ">g(x)，然后按以下步骤执行：<br>（</span><span style="font-family: 'Courier New'; color: rgb(128, 0, 128); ">1</span><span style="font-family: 'Courier New'; color: rgb(0, 0, 0); ">）&nbsp;&nbsp;&nbsp;选一个方程的近似根，赋给变量x0；<br>（</span><span style="font-family: 'Courier New'; color: rgb(128, 0, 128); ">2</span><span style="font-family: 'Courier New'; color: rgb(0, 0, 0); ">）&nbsp;&nbsp;&nbsp;将x0的值保存于变量x1，然后计算g(x1)，并将结果存于变量x0；<br>（</span><span style="font-family: 'Courier New'; color: rgb(128, 0, 128); ">3</span><span style="font-family: 'Courier New'; color: rgb(0, 0, 0); ">）&nbsp;&nbsp;&nbsp;当x0与x1的差的绝对值还小于指定的精度要求时，重复步骤（</span><span style="font-family: 'Courier New'; color: rgb(128, 0, 128); ">2</span><span style="font-family: 'Courier New'; color: rgb(0, 0, 0); ">）的计算。<br>若方程有根，并且用上述方法计算出来的近似根序列收敛，则按上述方法求得的x0就认为是方程的根。上述算法用C程序的形式表示为：<br>【算法】迭代法求方程的根<br>{&nbsp;&nbsp;&nbsp;&nbsp;x0</span><span style="font-family: 'Courier New'; color: rgb(0, 0, 0); ">=</span><span style="font-family: 'Courier New'; color: rgb(0, 0, 0); ">初始近似根；<br>&nbsp;&nbsp;&nbsp;</span><span style="font-family: 'Courier New'; color: rgb(0, 0, 255); ">do</span><span style="font-family: 'Courier New'; color: rgb(0, 0, 0); ">&nbsp;{<br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;x1</span><span style="font-family: 'Courier New'; color: rgb(0, 0, 0); ">=</span><span style="font-family: 'Courier New'; color: rgb(0, 0, 0); ">x0；<br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;x0</span><span style="font-family: 'Courier New'; color: rgb(0, 0, 0); ">=</span><span style="font-family: 'Courier New'; color: rgb(0, 0, 0); ">g(x1)；&nbsp;&nbsp;&nbsp;</span><span style="font-family: 'Courier New'; color: rgb(0, 128, 0); ">/*</span><span style="font-family: 'Courier New'; color: rgb(0, 128, 0); ">按特定的方程计算新的近似根</span><span style="font-family: 'Courier New'; color: rgb(0, 128, 0); ">*/</span><span style="font-family: 'Courier New'; color: rgb(0, 0, 0); "><br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;}&nbsp;</span><span style="font-family: 'Courier New'; color: rgb(0, 0, 255); ">while</span><span style="font-family: 'Courier New'; color: rgb(0, 0, 0); ">&nbsp;(&nbsp;fabs(x0</span><span style="font-family: 'Courier New'; color: rgb(0, 0, 0); ">-</span><span style="font-family: 'Courier New'; color: rgb(0, 0, 0); ">x1)</span><span style="font-family: 'Courier New'; color: rgb(0, 0, 0); ">&gt;</span><span style="font-family: 'Courier New'; color: rgb(0, 0, 0); ">Epsilon)；<br>&nbsp;&nbsp;&nbsp;printf(&#8220;方程的近似根是</span><span style="font-family: 'Courier New'; color: rgb(0, 0, 0); ">%</span><span style="font-family: 'Courier New'; color: rgb(0, 0, 0); ">f\n&#8221;，x0)；<br>}<br>迭代算法也常用于求方程组的根，令<br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;X</span><span style="font-family: 'Courier New'; color: rgb(0, 0, 0); ">=</span><span style="font-family: 'Courier New'; color: rgb(0, 0, 0); ">（x0，x1，&#8230;，xn</span><span style="font-family: 'Courier New'; color: rgb(0, 0, 0); ">-</span><span style="font-family: 'Courier New'; color: rgb(128, 0, 128); ">1</span><span style="font-family: 'Courier New'; color: rgb(0, 0, 0); ">）<br>设方程组为：<br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;xi</span><span style="font-family: 'Courier New'; color: rgb(0, 0, 0); ">=</span><span style="font-family: 'Courier New'; color: rgb(0, 0, 0); ">gi(X)&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(I</span><span style="font-family: 'Courier New'; color: rgb(0, 0, 0); ">=</span><span style="font-family: 'Courier New'; color: rgb(128, 0, 128); ">0</span><span style="font-family: 'Courier New'; color: rgb(0, 0, 0); ">，</span><span style="font-family: 'Courier New'; color: rgb(128, 0, 128); ">1</span><span style="font-family: 'Courier New'; color: rgb(0, 0, 0); ">，&#8230;，n</span><span style="font-family: 'Courier New'; color: rgb(0, 0, 0); ">-</span><span style="font-family: 'Courier New'; color: rgb(128, 0, 128); ">1</span><span style="font-family: 'Courier New'; color: rgb(0, 0, 0); ">)<br>则求方程组根的迭代算法可描述如下：<br>【算法】迭代法求方程组的根<br>&nbsp;&nbsp;&nbsp;{&nbsp;&nbsp;&nbsp;&nbsp;</span><span style="font-family: 'Courier New'; color: rgb(0, 0, 255); ">for</span><span style="font-family: 'Courier New'; color: rgb(0, 0, 0); ">&nbsp;(i</span><span style="font-family: 'Courier New'; color: rgb(0, 0, 0); ">=</span><span style="font-family: 'Courier New'; color: rgb(128, 0, 128); ">0</span><span style="font-family: 'Courier New'; color: rgb(0, 0, 0); ">;i</span><span style="font-family: 'Courier New'; color: rgb(0, 0, 0); ">&lt;</span><span style="font-family: 'Courier New'; color: rgb(0, 0, 0); ">n;i</span><span style="font-family: 'Courier New'; color: rgb(0, 0, 0); ">++</span><span style="font-family: 'Courier New'; color: rgb(0, 0, 0); ">)<br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;x[i]</span><span style="font-family: 'Courier New'; color: rgb(0, 0, 0); ">=</span><span style="font-family: 'Courier New'; color: rgb(0, 0, 0); ">初始近似根;<br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;</span><span style="font-family: 'Courier New'; color: rgb(0, 0, 255); ">do</span><span style="font-family: 'Courier New'; color: rgb(0, 0, 0); ">&nbsp;{<br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;</span><span style="font-family: 'Courier New'; color: rgb(0, 0, 255); ">for</span><span style="font-family: 'Courier New'; color: rgb(0, 0, 0); ">&nbsp;(i</span><span style="font-family: 'Courier New'; color: rgb(0, 0, 0); ">=</span><span style="font-family: 'Courier New'; color: rgb(128, 0, 128); ">0</span><span style="font-family: 'Courier New'; color: rgb(0, 0, 0); ">;i</span><span style="font-family: 'Courier New'; color: rgb(0, 0, 0); ">&lt;</span><span style="font-family: 'Courier New'; color: rgb(0, 0, 0); ">n;i</span><span style="font-family: 'Courier New'; color: rgb(0, 0, 0); ">++</span><span style="font-family: 'Courier New'; color: rgb(0, 0, 0); ">)<br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;y[i]</span><span style="font-family: 'Courier New'; color: rgb(0, 0, 0); ">=</span><span style="font-family: 'Courier New'; color: rgb(0, 0, 0); ">x[i];<br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;</span><span style="font-family: 'Courier New'; color: rgb(0, 0, 255); ">for</span><span style="font-family: 'Courier New'; color: rgb(0, 0, 0); ">&nbsp;(i</span><span style="font-family: 'Courier New'; color: rgb(0, 0, 0); ">=</span><span style="font-family: 'Courier New'; color: rgb(128, 0, 128); ">0</span><span style="font-family: 'Courier New'; color: rgb(0, 0, 0); ">;i</span><span style="font-family: 'Courier New'; color: rgb(0, 0, 0); ">&lt;</span><span style="font-family: 'Courier New'; color: rgb(0, 0, 0); ">n;i</span><span style="font-family: 'Courier New'; color: rgb(0, 0, 0); ">++</span><span style="font-family: 'Courier New'; color: rgb(0, 0, 0); ">)<br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;x[i]</span><span style="font-family: 'Courier New'; color: rgb(0, 0, 0); ">=</span><span style="font-family: 'Courier New'; color: rgb(0, 0, 0); ">gi(X);<br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;</span><span style="font-family: 'Courier New'; color: rgb(0, 0, 255); ">for</span><span style="font-family: 'Courier New'; color: rgb(0, 0, 0); ">&nbsp;(delta</span><span style="font-family: 'Courier New'; color: rgb(0, 0, 0); ">=</span><span style="font-family: 'Courier New'; color: rgb(128, 0, 128); ">0.0</span><span style="font-family: 'Courier New'; color: rgb(0, 0, 0); ">,i</span><span style="font-family: 'Courier New'; color: rgb(0, 0, 0); ">=</span><span style="font-family: 'Courier New'; color: rgb(128, 0, 128); ">0</span><span style="font-family: 'Courier New'; color: rgb(0, 0, 0); ">;i</span><span style="font-family: 'Courier New'; color: rgb(0, 0, 0); ">&lt;</span><span style="font-family: 'Courier New'; color: rgb(0, 0, 0); ">n;i</span><span style="font-family: 'Courier New'; color: rgb(0, 0, 0); ">++</span><span style="font-family: 'Courier New'; color: rgb(0, 0, 0); ">)<br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;</span><span style="font-family: 'Courier New'; color: rgb(0, 0, 255); ">if</span><span style="font-family: 'Courier New'; color: rgb(0, 0, 0); ">&nbsp;(fabs(y[i]</span><span style="font-family: 'Courier New'; color: rgb(0, 0, 0); ">-</span><span style="font-family: 'Courier New'; color: rgb(0, 0, 0); ">x[i])</span><span style="font-family: 'Courier New'; color: rgb(0, 0, 0); ">&gt;</span><span style="font-family: 'Courier New'; color: rgb(0, 0, 0); ">delta)&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;delta</span><span style="font-family: 'Courier New'; color: rgb(0, 0, 0); ">=</span><span style="font-family: 'Courier New'; color: rgb(0, 0, 0); ">fabs(y[i]</span><span style="font-family: 'Courier New'; color: rgb(0, 0, 0); ">-</span><span style="font-family: 'Courier New'; color: rgb(0, 0, 0); ">x[i])；<br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;}&nbsp;</span><span style="font-family: 'Courier New'; color: rgb(0, 0, 255); ">while</span><span style="font-family: 'Courier New'; color: rgb(0, 0, 0); ">&nbsp;(delta</span><span style="font-family: 'Courier New'; color: rgb(0, 0, 0); ">&gt;</span><span style="font-family: 'Courier New'; color: rgb(0, 0, 0); ">Epsilon)；<br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;</span><span style="font-family: 'Courier New'; color: rgb(0, 0, 255); ">for</span><span style="font-family: 'Courier New'; color: rgb(0, 0, 0); ">&nbsp;(i</span><span style="font-family: 'Courier New'; color: rgb(0, 0, 0); ">=</span><span style="font-family: 'Courier New'; color: rgb(128, 0, 128); ">0</span><span style="font-family: 'Courier New'; color: rgb(0, 0, 0); ">;i</span><span style="font-family: 'Courier New'; color: rgb(0, 0, 0); ">&lt;</span><span style="font-family: 'Courier New'; color: rgb(0, 0, 0); ">n;i</span><span style="font-family: 'Courier New'; color: rgb(0, 0, 0); ">++</span><span style="font-family: 'Courier New'; color: rgb(0, 0, 0); ">)<br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;printf(&#8220;变量x[</span><span style="font-family: 'Courier New'; color: rgb(0, 0, 0); ">%</span><span style="font-family: 'Courier New'; color: rgb(0, 0, 0); ">d]的近似根是&nbsp;</span><span style="font-family: 'Courier New'; color: rgb(0, 0, 0); ">%</span><span style="font-family: 'Courier New'; color: rgb(0, 0, 0); ">f&#8221;，I，x[i])；<br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;printf(&#8220;\n&#8221;)；<br>&nbsp;&nbsp;&nbsp;}<br>&nbsp;&nbsp;&nbsp;具体使用迭代法求根时应注意以下两种可能发生的情况：<br>（</span><span style="font-family: 'Courier New'; color: rgb(128, 0, 128); ">1</span><span style="font-family: 'Courier New'; color: rgb(0, 0, 0); ">）&nbsp;&nbsp;&nbsp;如果方程无解，算法求出的近似根序列就不会收敛，迭代过程会变成死循环，因此在使用迭代算法前应先考察方程是否有解，并在程序中对迭代的次数给予限制；<br>（</span><span style="font-family: 'Courier New'; color: rgb(128, 0, 128); ">2</span><span style="font-family: 'Courier New'; color: rgb(0, 0, 0); ">）&nbsp;&nbsp;&nbsp;方程虽然有解，但迭代公式选择不当，或迭代的初始近似根选择不合理，也会导致迭代失败。</span></div></div></div>
<img src ="http://www.cppblog.com/MiYu/aggbug/124963.html" width = "1" height = "1" /><br><br><div align=right><a style="text-decoration:none;" href="http://www.cppblog.com/MiYu/" target="_blank">MiYu</a> 2010-08-27 19:18 <a href="http://www.cppblog.com/MiYu/archive/2010/08/27/124963.html#Feedback" target="_blank" style="text-decoration:none;">发表评论</a></div>]]></description></item><item><title>常用算法讲解---穷举搜索法</title><link>http://www.cppblog.com/MiYu/archive/2010/08/27/124962.html</link><dc:creator>MiYu</dc:creator><author>MiYu</author><pubDate>Fri, 27 Aug 2010 11:13:00 GMT</pubDate><guid>http://www.cppblog.com/MiYu/archive/2010/08/27/124962.html</guid><wfw:comment>http://www.cppblog.com/MiYu/comments/124962.html</wfw:comment><comments>http://www.cppblog.com/MiYu/archive/2010/08/27/124962.html#Feedback</comments><slash:comments>0</slash:comments><wfw:commentRss>http://www.cppblog.com/MiYu/comments/commentRss/124962.html</wfw:commentRss><trackback:ping>http://www.cppblog.com/MiYu/services/trackbacks/124962.html</trackback:ping><description><![CDATA[<p style="margin-top: 5px; margin-right: auto; margin-bottom: 5px; margin-left: auto; text-indent: 0px; font-family: verdana, 'courier new'; font-size: 14px; line-height: 21px; ">MiYu原创, 转帖请注明 : 转载自&nbsp;<a href="http://www.cnblogs.com/MiYu"><font  color="#000000">______________白白の屋</font></a>&nbsp;&nbsp;<img src="http://www.cnblogs.com/Emoticons/baimantou/223332482.gif" alt=""></p><p style="margin-top: 5px; margin-right: auto; margin-bottom: 5px; margin-left: auto; text-indent: 0px; font-family: verdana, 'courier new'; font-size: 14px; line-height: 21px; ">&nbsp;</p><div class="cnblogs_code" style="background-color: rgb(245, 245, 245); font-family: 'Courier New'; font-size: 13px; border-left-color: rgb(204, 204, 204); padding-top: 5px; padding-right: 5px; padding-bottom: 5px; padding-left: 5px; word-break: break-all; overflow-x: auto; overflow-y: auto; line-height: 21px; "><div><font  color="#800080"><span  style="font-family: Verdana, Helvetica, Arial, sans-serif; color: rgb(68, 68, 68); line-height: 19px; font-size: 12px; border-collapse: collapse; "><div class="t_msgfontfix" style="word-wrap: break-word; line-height: normal; min-height: 100px; "><table cellspacing="0" cellpadding="0" style="word-wrap: break-word; empty-cells: show; border-collapse: collapse; line-height: normal; table-layout: fixed; margin-left: 1px; width: 1152px; "><tbody style="word-wrap: break-word; line-height: normal; "><tr style="word-wrap: break-word; line-height: normal; "><td class="t_msgfont" id="postmessage_9832" style="word-wrap: break-word; color: rgb(68, 68, 68); font: normal normal normal 12px/1.6em Verdana, Helvetica, Arial, sans-serif; line-height: 1.6em; font-size: 14px; ">穷举搜索法&nbsp;<br style="word-wrap: break-word; line-height: normal; ">&nbsp; &nbsp;&nbsp;&nbsp;穷举搜索法是对可能是解的众多候选解按某种顺序进行逐一枚举和检验，并从众找出那些符合要求的候选解作为问题的解。<br style="word-wrap: break-word; line-height: normal; ">【问题】&nbsp; &nbsp;将A、B、C、D、E、F这六个变量排成如图所示的三角形，这六个变量分别取[1，6]上的整数，且均不相同。求使三角形三条边上的变量之和相等的全部解。如图就是一个解。<br style="word-wrap: break-word; line-height: normal; ">程序引入变量a、b、c、d、e、f，并让它们分别顺序取1至6的证书，在它们互不相同的条件下，测试由它们排成的如图所示的三角形三条边上的变量之和是否相等，如相等即为一种满足要求的排列，把它们输出。当这些变量取尽所有的组合后，程序就可得到全部可能的解。细节见下面的程序。<br style="word-wrap: break-word; line-height: normal; ">【程序1】<div class="blockcode" style="word-wrap: break-word; line-height: normal; margin-top: 10px; margin-right: 0px; margin-bottom: 10px; margin-left: 0px; padding-top: 10px; padding-right: 0px; padding-bottom: 5px; padding-left: 10px; width: 586px; border-left-color: rgb(204, 204, 204); background-image: url(http://www.cppleyuan.com/images/default/codebg.gif); background-attachment: initial; background-origin: initial; background-clip: initial; background-color: rgb(247, 247, 247); overflow-x: hidden; overflow-y: hidden; background-position: 0px 0px; background-repeat: no-repeat repeat; "><div id="code0" style="word-wrap: break-word; line-height: normal; "><ol style="word-wrap: break-word; line-height: normal; margin-top: 0px; margin-right: 0px; margin-bottom: 0px; margin-left: 10px; padding-top: 0px; padding-right: 0px; padding-bottom: 0px; padding-left: 0px; "><li style="word-wrap: break-word; margin-top: 0px; margin-right: 0px; margin-bottom: 0px; margin-left: 2em; padding-top: 0px; padding-right: 0px; padding-bottom: 0px; padding-left: 10px; line-height: 1.8em; list-style-type: decimal-leading-zero; font-family: Monaco, Consolas, '&quot;Lucida Console&quot;', '&quot;Courier New&quot;', serif; font-size: 12px; "># include &lt;stdio.h&gt;<br style="word-wrap: break-word; line-height: normal; "></li><li style="word-wrap: break-word; margin-top: 0px; margin-right: 0px; margin-bottom: 0px; margin-left: 2em; padding-top: 0px; padding-right: 0px; padding-bottom: 0px; padding-left: 10px; line-height: 1.8em; list-style-type: decimal-leading-zero; font-family: Monaco, Consolas, '&quot;Lucida Console&quot;', '&quot;Courier New&quot;', serif; font-size: 12px; ">void main()<br style="word-wrap: break-word; line-height: normal; "></li><li style="word-wrap: break-word; margin-top: 0px; margin-right: 0px; margin-bottom: 0px; margin-left: 2em; padding-top: 0px; padding-right: 0px; padding-bottom: 0px; padding-left: 10px; line-height: 1.8em; list-style-type: decimal-leading-zero; font-family: Monaco, Consolas, '&quot;Lucida Console&quot;', '&quot;Courier New&quot;', serif; font-size: 12px; ">{&nbsp; &nbsp;int a,b,c,d,e,f;<br style="word-wrap: break-word; line-height: normal; "></li><li style="word-wrap: break-word; margin-top: 0px; margin-right: 0px; margin-bottom: 0px; margin-left: 2em; padding-top: 0px; padding-right: 0px; padding-bottom: 0px; padding-left: 10px; line-height: 1.8em; list-style-type: decimal-leading-zero; font-family: Monaco, Consolas, '&quot;Lucida Console&quot;', '&quot;Courier New&quot;', serif; font-size: 12px; ">&nbsp; &nbsp;for (a=1;a&lt;=6;a++)&nbsp; &nbsp;<br style="word-wrap: break-word; line-height: normal; "></li><li style="word-wrap: break-word; margin-top: 0px; margin-right: 0px; margin-bottom: 0px; margin-left: 2em; padding-top: 0px; padding-right: 0px; padding-bottom: 0px; padding-left: 10px; line-height: 1.8em; list-style-type: decimal-leading-zero; font-family: Monaco, Consolas, '&quot;Lucida Console&quot;', '&quot;Courier New&quot;', serif; font-size: 12px; ">&nbsp; &nbsp;&nbsp; &nbsp;for (b=1;b&lt;=6;b++)&nbsp; &nbsp;&nbsp; &nbsp;{<br style="word-wrap: break-word; line-height: normal; "></li><li style="word-wrap: break-word; margin-top: 0px; margin-right: 0px; margin-bottom: 0px; margin-left: 2em; padding-top: 0px; padding-right: 0px; padding-bottom: 0px; padding-left: 10px; line-height: 1.8em; list-style-type: decimal-leading-zero; font-family: Monaco, Consolas, '&quot;Lucida Console&quot;', '&quot;Courier New&quot;', serif; font-size: 12px; ">&nbsp; &nbsp;&nbsp; &nbsp;&nbsp; &nbsp;if (b==a)&nbsp; &nbsp;&nbsp; &nbsp;continue;<br style="word-wrap: break-word; line-height: normal; "></li><li style="word-wrap: break-word; margin-top: 0px; margin-right: 0px; margin-bottom: 0px; margin-left: 2em; padding-top: 0px; padding-right: 0px; padding-bottom: 0px; padding-left: 10px; line-height: 1.8em; list-style-type: decimal-leading-zero; font-family: Monaco, Consolas, '&quot;Lucida Console&quot;', '&quot;Courier New&quot;', serif; font-size: 12px; ">&nbsp; &nbsp;&nbsp; &nbsp;&nbsp; &nbsp;for (c=1;c&lt;=6;c++)&nbsp; &nbsp;&nbsp; &nbsp;{<br style="word-wrap: break-word; line-height: normal; "></li><li style="word-wrap: break-word; margin-top: 0px; margin-right: 0px; margin-bottom: 0px; margin-left: 2em; padding-top: 0px; padding-right: 0px; padding-bottom: 0px; padding-left: 10px; line-height: 1.8em; list-style-type: decimal-leading-zero; font-family: Monaco, Consolas, '&quot;Lucida Console&quot;', '&quot;Courier New&quot;', serif; font-size: 12px; ">&nbsp; &nbsp;&nbsp; &nbsp;&nbsp; &nbsp;&nbsp; &nbsp;if (c==a)||(c==b)&nbsp; &nbsp;continue;<br style="word-wrap: break-word; line-height: normal; "></li><li style="word-wrap: break-word; margin-top: 0px; margin-right: 0px; margin-bottom: 0px; margin-left: 2em; padding-top: 0px; padding-right: 0px; padding-bottom: 0px; padding-left: 10px; line-height: 1.8em; list-style-type: decimal-leading-zero; font-family: Monaco, Consolas, '&quot;Lucida Console&quot;', '&quot;Courier New&quot;', serif; font-size: 12px; ">&nbsp; &nbsp;&nbsp; &nbsp;&nbsp; &nbsp;&nbsp; &nbsp;for (d=1;d&lt;=6;d++)&nbsp; &nbsp;&nbsp; &nbsp;{<br style="word-wrap: break-word; line-height: normal; "></li><li style="word-wrap: break-word; margin-top: 0px; margin-right: 0px; margin-bottom: 0px; margin-left: 2em; padding-top: 0px; padding-right: 0px; padding-bottom: 0px; padding-left: 10px; line-height: 1.8em; list-style-type: decimal-leading-zero; font-family: Monaco, Consolas, '&quot;Lucida Console&quot;', '&quot;Courier New&quot;', serif; font-size: 12px; ">&nbsp; &nbsp;&nbsp; &nbsp;&nbsp; &nbsp;&nbsp; &nbsp;&nbsp; &nbsp;if (d==a)||(d==b)||(d==c)&nbsp; &nbsp; continue;<br style="word-wrap: break-word; line-height: normal; "></li><li style="word-wrap: break-word; margin-top: 0px; margin-right: 0px; margin-bottom: 0px; margin-left: 2em; padding-top: 0px; padding-right: 0px; padding-bottom: 0px; padding-left: 10px; line-height: 1.8em; list-style-type: decimal-leading-zero; font-family: Monaco, Consolas, '&quot;Lucida Console&quot;', '&quot;Courier New&quot;', serif; font-size: 12px; ">for (e=1;e&lt;=6;e++)&nbsp; &nbsp;&nbsp; &nbsp;{<br style="word-wrap: break-word; line-height: normal; "></li><li style="word-wrap: break-word; margin-top: 0px; margin-right: 0px; margin-bottom: 0px; margin-left: 2em; padding-top: 0px; padding-right: 0px; padding-bottom: 0px; padding-left: 10px; line-height: 1.8em; list-style-type: decimal-leading-zero; font-family: Monaco, Consolas, '&quot;Lucida Console&quot;', '&quot;Courier New&quot;', serif; font-size: 12px; ">&nbsp; &nbsp;if (e==a)||(e==b)||(e==c)||(e==d)&nbsp; &nbsp; continue;<br style="word-wrap: break-word; line-height: normal; "></li><li style="word-wrap: break-word; margin-top: 0px; margin-right: 0px; margin-bottom: 0px; margin-left: 2em; padding-top: 0px; padding-right: 0px; padding-bottom: 0px; padding-left: 10px; line-height: 1.8em; list-style-type: decimal-leading-zero; font-family: Monaco, Consolas, '&quot;Lucida Console&quot;', '&quot;Courier New&quot;', serif; font-size: 12px; ">f=21-(a+b+c+d+e);<br style="word-wrap: break-word; line-height: normal; "></li><li style="word-wrap: break-word; margin-top: 0px; margin-right: 0px; margin-bottom: 0px; margin-left: 2em; padding-top: 0px; padding-right: 0px; padding-bottom: 0px; padding-left: 10px; line-height: 1.8em; list-style-type: decimal-leading-zero; font-family: Monaco, Consolas, '&quot;Lucida Console&quot;', '&quot;Courier New&quot;', serif; font-size: 12px; ">if ((a+b+c==c+d+e))&amp;&amp;(a+b+c==e+f+a))&nbsp; &nbsp;{<br style="word-wrap: break-word; line-height: normal; "></li><li style="word-wrap: break-word; margin-top: 0px; margin-right: 0px; margin-bottom: 0px; margin-left: 2em; padding-top: 0px; padding-right: 0px; padding-bottom: 0px; padding-left: 10px; line-height: 1.8em; list-style-type: decimal-leading-zero; font-family: Monaco, Consolas, '&quot;Lucida Console&quot;', '&quot;Courier New&quot;', serif; font-size: 12px; ">printf(&#8220;%6d,a);<br style="word-wrap: break-word; line-height: normal; "></li><li style="word-wrap: break-word; margin-top: 0px; margin-right: 0px; margin-bottom: 0px; margin-left: 2em; padding-top: 0px; padding-right: 0px; padding-bottom: 0px; padding-left: 10px; line-height: 1.8em; list-style-type: decimal-leading-zero; font-family: Monaco, Consolas, '&quot;Lucida Console&quot;', '&quot;Courier New&quot;', serif; font-size: 12px; ">&nbsp; &nbsp;printf(&#8220;%4d%4d&#8221;,b,f);<br style="word-wrap: break-word; line-height: normal; "></li><li style="word-wrap: break-word; margin-top: 0px; margin-right: 0px; margin-bottom: 0px; margin-left: 2em; padding-top: 0px; padding-right: 0px; padding-bottom: 0px; padding-left: 10px; line-height: 1.8em; list-style-type: decimal-leading-zero; font-family: Monaco, Consolas, '&quot;Lucida Console&quot;', '&quot;Courier New&quot;', serif; font-size: 12px; ">&nbsp; &nbsp;printf(&#8220;%2d%4d%4d&#8221;,c,d,e);<br style="word-wrap: break-word; line-height: normal; "></li><li style="word-wrap: break-word; margin-top: 0px; margin-right: 0px; margin-bottom: 0px; margin-left: 2em; padding-top: 0px; padding-right: 0px; padding-bottom: 0px; padding-left: 10px; line-height: 1.8em; list-style-type: decimal-leading-zero; font-family: Monaco, Consolas, '&quot;Lucida Console&quot;', '&quot;Courier New&quot;', serif; font-size: 12px; ">&nbsp; &nbsp;scanf(&#8220;%*c&#8221;);<br style="word-wrap: break-word; line-height: normal; "></li><li style="word-wrap: break-word; margin-top: 0px; margin-right: 0px; margin-bottom: 0px; margin-left: 2em; padding-top: 0px; padding-right: 0px; padding-bottom: 0px; padding-left: 10px; line-height: 1.8em; list-style-type: decimal-leading-zero; font-family: Monaco, Consolas, '&quot;Lucida Console&quot;', '&quot;Courier New&quot;', serif; font-size: 12px; ">}<br style="word-wrap: break-word; line-height: normal; "></li><li style="word-wrap: break-word; margin-top: 0px; margin-right: 0px; margin-bottom: 0px; margin-left: 2em; padding-top: 0px; padding-right: 0px; padding-bottom: 0px; padding-left: 10px; line-height: 1.8em; list-style-type: decimal-leading-zero; font-family: Monaco, Consolas, '&quot;Lucida Console&quot;', '&quot;Courier New&quot;', serif; font-size: 12px; ">&nbsp; &nbsp;&nbsp; &nbsp;&nbsp; &nbsp;&nbsp; &nbsp;&nbsp; &nbsp;&nbsp; &nbsp;}<br style="word-wrap: break-word; line-height: normal; "></li><li style="word-wrap: break-word; margin-top: 0px; margin-right: 0px; margin-bottom: 0px; margin-left: 2em; padding-top: 0px; padding-right: 0px; padding-bottom: 0px; padding-left: 10px; line-height: 1.8em; list-style-type: decimal-leading-zero; font-family: Monaco, Consolas, '&quot;Lucida Console&quot;', '&quot;Courier New&quot;', serif; font-size: 12px; ">&nbsp; &nbsp;&nbsp; &nbsp;&nbsp; &nbsp;&nbsp; &nbsp;&nbsp; &nbsp;}<br style="word-wrap: break-word; line-height: normal; "></li><li style="word-wrap: break-word; margin-top: 0px; margin-right: 0px; margin-bottom: 0px; margin-left: 2em; padding-top: 0px; padding-right: 0px; padding-bottom: 0px; padding-left: 10px; line-height: 1.8em; list-style-type: decimal-leading-zero; font-family: Monaco, Consolas, '&quot;Lucida Console&quot;', '&quot;Courier New&quot;', serif; font-size: 12px; ">&nbsp; &nbsp;&nbsp; &nbsp;&nbsp; &nbsp;&nbsp; &nbsp;}<br style="word-wrap: break-word; line-height: normal; "></li><li style="word-wrap: break-word; margin-top: 0px; margin-right: 0px; margin-bottom: 0px; margin-left: 2em; padding-top: 0px; padding-right: 0px; padding-bottom: 0px; padding-left: 10px; line-height: 1.8em; list-style-type: decimal-leading-zero; font-family: Monaco, Consolas, '&quot;Lucida Console&quot;', '&quot;Courier New&quot;', serif; font-size: 12px; ">&nbsp; &nbsp;&nbsp; &nbsp;&nbsp; &nbsp;}<br style="word-wrap: break-word; line-height: normal; "></li><li style="word-wrap: break-word; margin-top: 0px; margin-right: 0px; margin-bottom: 0px; margin-left: 2em; padding-top: 0px; padding-right: 0px; padding-bottom: 0px; padding-left: 10px; line-height: 1.8em; list-style-type: decimal-leading-zero; font-family: Monaco, Consolas, '&quot;Lucida Console&quot;', '&quot;Courier New&quot;', serif; font-size: 12px; ">&nbsp; &nbsp;&nbsp; &nbsp;}</li></ol></div><em style="word-wrap: break-word; text-align: left; font-style: normal; line-height: normal; margin-left: 43px; color: rgb(102, 102, 102); font-size: 12px; cursor: pointer; ">复制代码</em></div>按穷举法编写的程序通常不能适应变化的情况。如问题改成有9个变量排成三角形，每条边有4个变量的情况，程序的循环重数就要相应改变。<br style="word-wrap: break-word; line-height: normal; ">&nbsp; &nbsp;对一组数穷尽所有排列，还有更直接的方法。将一个排列看作一个长整数，则所有排列对应着一组整数。将这组整数按从小到大的顺序排列排成一个整数，从对应最小的整数开始。按数列的递增顺序逐一列举每个排列对应的每个整数，这能更有效地完成排列的穷举。从一个排列找出对应数列的下一个排列可在当前排列的基础上作部分调整来实现。倘若当前排列为1，2，4，6，5，3，并令其对应的长整数为124653。要寻找比长整数124653更大的排列，可从该排列的最后一个数字顺序向前逐位考察，当发现排列中的某个数字比它前一个数字大时，如本例中的6比它的前一位数字4大，这说明还有对应更大整数的排列。但为了顺序从小到大列举出所有的排列，不能立即调整得太大，如本例中将数字6与数字4交换得到的排列126453就不是排列124653的下一个排列。为了得到排列124653的下一个排列，应从已经考察过的那部分数字中选出比数字大，但又是它们中最小的那一个数字，比如数字5，与数字4交换。该数字也是从后向前考察过程中第一个比4大的数字。5与4交换后，得到排列125643。在前面数字1，2，5固定的情况下，还应选择对应最小整数的那个排列，为此还需将后面那部分数字的排列顺序颠倒，如将数字6，4，3的排列顺序颠倒，得到排列1，2，5，3，4，6，这才是排列1，2，4，6，5，3的下一个排列。按以上想法编写的程序如下。<br style="word-wrap: break-word; line-height: normal; ">【程序2】<div class="blockcode" style="word-wrap: break-word; line-height: normal; margin-top: 10px; margin-right: 0px; margin-bottom: 10px; margin-left: 0px; padding-top: 10px; padding-right: 0px; padding-bottom: 5px; padding-left: 10px; width: 586px; border-left-color: rgb(204, 204, 204); background-image: url(http://www.cppleyuan.com/images/default/codebg.gif); background-attachment: initial; background-origin: initial; background-clip: initial; background-color: rgb(247, 247, 247); overflow-x: hidden; overflow-y: hidden; background-position: 0px 0px; background-repeat: no-repeat repeat; "><div id="code1" style="word-wrap: break-word; line-height: normal; "><ol style="word-wrap: break-word; line-height: normal; margin-top: 0px; margin-right: 0px; margin-bottom: 0px; margin-left: 10px; padding-top: 0px; padding-right: 0px; padding-bottom: 0px; padding-left: 0px; "><li style="word-wrap: break-word; margin-top: 0px; margin-right: 0px; margin-bottom: 0px; margin-left: 2em; padding-top: 0px; padding-right: 0px; padding-bottom: 0px; padding-left: 10px; line-height: 1.8em; list-style-type: decimal-leading-zero; font-family: Monaco, Consolas, '&quot;Lucida Console&quot;', '&quot;Courier New&quot;', serif; font-size: 12px; "># include &lt;stdio.h&gt;<br style="word-wrap: break-word; line-height: normal; "></li><li style="word-wrap: break-word; margin-top: 0px; margin-right: 0px; margin-bottom: 0px; margin-left: 2em; padding-top: 0px; padding-right: 0px; padding-bottom: 0px; padding-left: 10px; line-height: 1.8em; list-style-type: decimal-leading-zero; font-family: Monaco, Consolas, '&quot;Lucida Console&quot;', '&quot;Courier New&quot;', serif; font-size: 12px; "># define SIDE_N&nbsp; &nbsp;3<br style="word-wrap: break-word; line-height: normal; "></li><li style="word-wrap: break-word; margin-top: 0px; margin-right: 0px; margin-bottom: 0px; margin-left: 2em; padding-top: 0px; padding-right: 0px; padding-bottom: 0px; padding-left: 10px; line-height: 1.8em; list-style-type: decimal-leading-zero; font-family: Monaco, Consolas, '&quot;Lucida Console&quot;', '&quot;Courier New&quot;', serif; font-size: 12px; "># define LENGTH&nbsp; &nbsp;3<br style="word-wrap: break-word; line-height: normal; "></li><li style="word-wrap: break-word; margin-top: 0px; margin-right: 0px; margin-bottom: 0px; margin-left: 2em; padding-top: 0px; padding-right: 0px; padding-bottom: 0px; padding-left: 10px; line-height: 1.8em; list-style-type: decimal-leading-zero; font-family: Monaco, Consolas, '&quot;Lucida Console&quot;', '&quot;Courier New&quot;', serif; font-size: 12px; "># define VARIABLES&nbsp; &nbsp;6<br style="word-wrap: break-word; line-height: normal; "></li><li style="word-wrap: break-word; margin-top: 0px; margin-right: 0px; margin-bottom: 0px; margin-left: 2em; padding-top: 0px; padding-right: 0px; padding-bottom: 0px; padding-left: 10px; line-height: 1.8em; list-style-type: decimal-leading-zero; font-family: Monaco, Consolas, '&quot;Lucida Console&quot;', '&quot;Courier New&quot;', serif; font-size: 12px; ">int A,B,C,D,E,F;<br style="word-wrap: break-word; line-height: normal; "></li><li style="word-wrap: break-word; margin-top: 0px; margin-right: 0px; margin-bottom: 0px; margin-left: 2em; padding-top: 0px; padding-right: 0px; padding-bottom: 0px; padding-left: 10px; line-height: 1.8em; list-style-type: decimal-leading-zero; font-family: Monaco, Consolas, '&quot;Lucida Console&quot;', '&quot;Courier New&quot;', serif; font-size: 12px; ">int *pt[]={&amp;A,&amp;B,&amp;C,&amp;D,&amp;E,&amp;F};<br style="word-wrap: break-word; line-height: normal; "></li><li style="word-wrap: break-word; margin-top: 0px; margin-right: 0px; margin-bottom: 0px; margin-left: 2em; padding-top: 0px; padding-right: 0px; padding-bottom: 0px; padding-left: 10px; line-height: 1.8em; list-style-type: decimal-leading-zero; font-family: Monaco, Consolas, '&quot;Lucida Console&quot;', '&quot;Courier New&quot;', serif; font-size: 12px; ">int *side[SIDE_N][LENGTH]={&amp;A,&amp;B,&amp;C,&amp;C,&amp;D,&amp;E,&amp;E,&amp;F,&amp;A};<br style="word-wrap: break-word; line-height: normal; "></li><li style="word-wrap: break-word; margin-top: 0px; margin-right: 0px; margin-bottom: 0px; margin-left: 2em; padding-top: 0px; padding-right: 0px; padding-bottom: 0px; padding-left: 10px; line-height: 1.8em; list-style-type: decimal-leading-zero; font-family: Monaco, Consolas, '&quot;Lucida Console&quot;', '&quot;Courier New&quot;', serif; font-size: 12px; ">int side_total[SIDE_N];<br style="word-wrap: break-word; line-height: normal; "></li><li style="word-wrap: break-word; margin-top: 0px; margin-right: 0px; margin-bottom: 0px; margin-left: 2em; padding-top: 0px; padding-right: 0px; padding-bottom: 0px; padding-left: 10px; line-height: 1.8em; list-style-type: decimal-leading-zero; font-family: Monaco, Consolas, '&quot;Lucida Console&quot;', '&quot;Courier New&quot;', serif; font-size: 12px; ">main{}<br style="word-wrap: break-word; line-height: normal; "></li><li style="word-wrap: break-word; margin-top: 0px; margin-right: 0px; margin-bottom: 0px; margin-left: 2em; padding-top: 0px; padding-right: 0px; padding-bottom: 0px; padding-left: 10px; line-height: 1.8em; list-style-type: decimal-leading-zero; font-family: Monaco, Consolas, '&quot;Lucida Console&quot;', '&quot;Courier New&quot;', serif; font-size: 12px; ">{&nbsp; &nbsp;int i,j,t,equal;<br style="word-wrap: break-word; line-height: normal; "></li><li style="word-wrap: break-word; margin-top: 0px; margin-right: 0px; margin-bottom: 0px; margin-left: 2em; padding-top: 0px; padding-right: 0px; padding-bottom: 0px; padding-left: 10px; line-height: 1.8em; list-style-type: decimal-leading-zero; font-family: Monaco, Consolas, '&quot;Lucida Console&quot;', '&quot;Courier New&quot;', serif; font-size: 12px; ">&nbsp; &nbsp;for (j=0;j&lt;VARIABLES;j++)<br style="word-wrap: break-word; line-height: normal; "></li><li style="word-wrap: break-word; margin-top: 0px; margin-right: 0px; margin-bottom: 0px; margin-left: 2em; padding-top: 0px; padding-right: 0px; padding-bottom: 0px; padding-left: 10px; line-height: 1.8em; list-style-type: decimal-leading-zero; font-family: Monaco, Consolas, '&quot;Lucida Console&quot;', '&quot;Courier New&quot;', serif; font-size: 12px; ">&nbsp; &nbsp;&nbsp; &nbsp;*pt[j]=j+1;<br style="word-wrap: break-word; line-height: normal; "></li><li style="word-wrap: break-word; margin-top: 0px; margin-right: 0px; margin-bottom: 0px; margin-left: 2em; padding-top: 0px; padding-right: 0px; padding-bottom: 0px; padding-left: 10px; line-height: 1.8em; list-style-type: decimal-leading-zero; font-family: Monaco, Consolas, '&quot;Lucida Console&quot;', '&quot;Courier New&quot;', serif; font-size: 12px; ">&nbsp; &nbsp;while(1)<br style="word-wrap: break-word; line-height: normal; "></li><li style="word-wrap: break-word; margin-top: 0px; margin-right: 0px; margin-bottom: 0px; margin-left: 2em; padding-top: 0px; padding-right: 0px; padding-bottom: 0px; padding-left: 10px; line-height: 1.8em; list-style-type: decimal-leading-zero; font-family: Monaco, Consolas, '&quot;Lucida Console&quot;', '&quot;Courier New&quot;', serif; font-size: 12px; ">&nbsp; &nbsp;{&nbsp; &nbsp;for (i=0;i&lt;SIDE_N;i++)<br style="word-wrap: break-word; line-height: normal; "></li><li style="word-wrap: break-word; margin-top: 0px; margin-right: 0px; margin-bottom: 0px; margin-left: 2em; padding-top: 0px; padding-right: 0px; padding-bottom: 0px; padding-left: 10px; line-height: 1.8em; list-style-type: decimal-leading-zero; font-family: Monaco, Consolas, '&quot;Lucida Console&quot;', '&quot;Courier New&quot;', serif; font-size: 12px; ">&nbsp; &nbsp;&nbsp; &nbsp;{&nbsp; &nbsp;for (t=j=0;j&lt;LENGTH;j++)<br style="word-wrap: break-word; line-height: normal; "></li><li style="word-wrap: break-word; margin-top: 0px; margin-right: 0px; margin-bottom: 0px; margin-left: 2em; padding-top: 0px; padding-right: 0px; padding-bottom: 0px; padding-left: 10px; line-height: 1.8em; list-style-type: decimal-leading-zero; font-family: Monaco, Consolas, '&quot;Lucida Console&quot;', '&quot;Courier New&quot;', serif; font-size: 12px; ">&nbsp; &nbsp;&nbsp; &nbsp;&nbsp; &nbsp;&nbsp; &nbsp;t+=*side[i][j];<br style="word-wrap: break-word; line-height: normal; "></li><li style="word-wrap: break-word; margin-top: 0px; margin-right: 0px; margin-bottom: 0px; margin-left: 2em; padding-top: 0px; padding-right: 0px; padding-bottom: 0px; padding-left: 10px; line-height: 1.8em; list-style-type: decimal-leading-zero; font-family: Monaco, Consolas, '&quot;Lucida Console&quot;', '&quot;Courier New&quot;', serif; font-size: 12px; ">&nbsp; &nbsp;&nbsp; &nbsp;&nbsp; &nbsp;side_total[i]=t;<br style="word-wrap: break-word; line-height: normal; "></li><li style="word-wrap: break-word; margin-top: 0px; margin-right: 0px; margin-bottom: 0px; margin-left: 2em; padding-top: 0px; padding-right: 0px; padding-bottom: 0px; padding-left: 10px; line-height: 1.8em; list-style-type: decimal-leading-zero; font-family: Monaco, Consolas, '&quot;Lucida Console&quot;', '&quot;Courier New&quot;', serif; font-size: 12px; ">&nbsp; &nbsp;&nbsp; &nbsp;}<br style="word-wrap: break-word; line-height: normal; "></li><li style="word-wrap: break-word; margin-top: 0px; margin-right: 0px; margin-bottom: 0px; margin-left: 2em; padding-top: 0px; padding-right: 0px; padding-bottom: 0px; padding-left: 10px; line-height: 1.8em; list-style-type: decimal-leading-zero; font-family: Monaco, Consolas, '&quot;Lucida Console&quot;', '&quot;Courier New&quot;', serif; font-size: 12px; ">&nbsp; &nbsp;&nbsp; &nbsp;for (equal=1,i=0;equal&amp;&amp;i&lt;SIDE_N-1;i++)<br style="word-wrap: break-word; line-height: normal; "></li><li style="word-wrap: break-word; margin-top: 0px; margin-right: 0px; margin-bottom: 0px; margin-left: 2em; padding-top: 0px; padding-right: 0px; padding-bottom: 0px; padding-left: 10px; line-height: 1.8em; list-style-type: decimal-leading-zero; font-family: Monaco, Consolas, '&quot;Lucida Console&quot;', '&quot;Courier New&quot;', serif; font-size: 12px; ">&nbsp; &nbsp;&nbsp; &nbsp;&nbsp; &nbsp;if (side_total[i]!=side_total[i+1]&nbsp; &nbsp;equal=0;<br style="word-wrap: break-word; line-height: normal; "></li><li style="word-wrap: break-word; margin-top: 0px; margin-right: 0px; margin-bottom: 0px; margin-left: 2em; padding-top: 0px; padding-right: 0px; padding-bottom: 0px; padding-left: 10px; line-height: 1.8em; list-style-type: decimal-leading-zero; font-family: Monaco, Consolas, '&quot;Lucida Console&quot;', '&quot;Courier New&quot;', serif; font-size: 12px; ">&nbsp; &nbsp;&nbsp; &nbsp;if (equal)<br style="word-wrap: break-word; line-height: normal; "></li><li style="word-wrap: break-word; margin-top: 0px; margin-right: 0px; margin-bottom: 0px; margin-left: 2em; padding-top: 0px; padding-right: 0px; padding-bottom: 0px; padding-left: 10px; line-height: 1.8em; list-style-type: decimal-leading-zero; font-family: Monaco, Consolas, '&quot;Lucida Console&quot;', '&quot;Courier New&quot;', serif; font-size: 12px; ">&nbsp; &nbsp;&nbsp; &nbsp;{&nbsp; &nbsp;for (i=1;i&lt;VARIABLES;i++)<br style="word-wrap: break-word; line-height: normal; "></li><li style="word-wrap: break-word; margin-top: 0px; margin-right: 0px; margin-bottom: 0px; margin-left: 2em; padding-top: 0px; padding-right: 0px; padding-bottom: 0px; padding-left: 10px; line-height: 1.8em; list-style-type: decimal-leading-zero; font-family: Monaco, Consolas, '&quot;Lucida Console&quot;', '&quot;Courier New&quot;', serif; font-size: 12px; ">&nbsp; &nbsp;&nbsp; &nbsp;&nbsp; &nbsp;&nbsp; &nbsp;printf(&#8220;%4d&#8221;,*pt[i]);<br style="word-wrap: break-word; line-height: normal; "></li><li style="word-wrap: break-word; margin-top: 0px; margin-right: 0px; margin-bottom: 0px; margin-left: 2em; padding-top: 0px; padding-right: 0px; padding-bottom: 0px; padding-left: 10px; line-height: 1.8em; list-style-type: decimal-leading-zero; font-family: Monaco, Consolas, '&quot;Lucida Console&quot;', '&quot;Courier New&quot;', serif; font-size: 12px; ">&nbsp; &nbsp;&nbsp; &nbsp;&nbsp; &nbsp;printf(&#8220;\n&#8221;);<br style="word-wrap: break-word; line-height: normal; "></li><li style="word-wrap: break-word; margin-top: 0px; margin-right: 0px; margin-bottom: 0px; margin-left: 2em; padding-top: 0px; padding-right: 0px; padding-bottom: 0px; padding-left: 10px; line-height: 1.8em; list-style-type: decimal-leading-zero; font-family: Monaco, Consolas, '&quot;Lucida Console&quot;', '&quot;Courier New&quot;', serif; font-size: 12px; ">&nbsp; &nbsp;&nbsp; &nbsp;&nbsp; &nbsp;scanf(&#8220;%*c&#8221;);<br style="word-wrap: break-word; line-height: normal; "></li><li style="word-wrap: break-word; margin-top: 0px; margin-right: 0px; margin-bottom: 0px; margin-left: 2em; padding-top: 0px; padding-right: 0px; padding-bottom: 0px; padding-left: 10px; line-height: 1.8em; list-style-type: decimal-leading-zero; font-family: Monaco, Consolas, '&quot;Lucida Console&quot;', '&quot;Courier New&quot;', serif; font-size: 12px; ">&nbsp; &nbsp;&nbsp; &nbsp;}<br style="word-wrap: break-word; line-height: normal; "></li><li style="word-wrap: break-word; margin-top: 0px; margin-right: 0px; margin-bottom: 0px; margin-left: 2em; padding-top: 0px; padding-right: 0px; padding-bottom: 0px; padding-left: 10px; line-height: 1.8em; list-style-type: decimal-leading-zero; font-family: Monaco, Consolas, '&quot;Lucida Console&quot;', '&quot;Courier New&quot;', serif; font-size: 12px; ">&nbsp; &nbsp;&nbsp; &nbsp;for (j=VARIABLES-1;j&gt;0;j--)<br style="word-wrap: break-word; line-height: normal; "></li><li style="word-wrap: break-word; margin-top: 0px; margin-right: 0px; margin-bottom: 0px; margin-left: 2em; padding-top: 0px; padding-right: 0px; padding-bottom: 0px; padding-left: 10px; line-height: 1.8em; list-style-type: decimal-leading-zero; font-family: Monaco, Consolas, '&quot;Lucida Console&quot;', '&quot;Courier New&quot;', serif; font-size: 12px; ">&nbsp; &nbsp;&nbsp; &nbsp;&nbsp; &nbsp;if (*pt[j]&gt;*pt[j-1])&nbsp; &nbsp;break;<br style="word-wrap: break-word; line-height: normal; "></li><li style="word-wrap: break-word; margin-top: 0px; margin-right: 0px; margin-bottom: 0px; margin-left: 2em; padding-top: 0px; padding-right: 0px; padding-bottom: 0px; padding-left: 10px; line-height: 1.8em; list-style-type: decimal-leading-zero; font-family: Monaco, Consolas, '&quot;Lucida Console&quot;', '&quot;Courier New&quot;', serif; font-size: 12px; ">&nbsp; &nbsp;&nbsp; &nbsp;if (j==0)&nbsp; &nbsp;break;<br style="word-wrap: break-word; line-height: normal; "></li><li style="word-wrap: break-word; margin-top: 0px; margin-right: 0px; margin-bottom: 0px; margin-left: 2em; padding-top: 0px; padding-right: 0px; padding-bottom: 0px; padding-left: 10px; line-height: 1.8em; list-style-type: decimal-leading-zero; font-family: Monaco, Consolas, '&quot;Lucida Console&quot;', '&quot;Courier New&quot;', serif; font-size: 12px; ">&nbsp; &nbsp;&nbsp; &nbsp;for (i=VARIABLES-1;i&gt;=j;i--)<br style="word-wrap: break-word; line-height: normal; "></li><li style="word-wrap: break-word; margin-top: 0px; margin-right: 0px; margin-bottom: 0px; margin-left: 2em; padding-top: 0px; padding-right: 0px; padding-bottom: 0px; padding-left: 10px; line-height: 1.8em; list-style-type: decimal-leading-zero; font-family: Monaco, Consolas, '&quot;Lucida Console&quot;', '&quot;Courier New&quot;', serif; font-size: 12px; ">&nbsp; &nbsp;&nbsp; &nbsp;&nbsp; &nbsp;if (*pt[i]&gt;*pt[i-1])&nbsp; &nbsp;break;<br style="word-wrap: break-word; line-height: normal; "></li><li style="word-wrap: break-word; margin-top: 0px; margin-right: 0px; margin-bottom: 0px; margin-left: 2em; padding-top: 0px; padding-right: 0px; padding-bottom: 0px; padding-left: 10px; line-height: 1.8em; list-style-type: decimal-leading-zero; font-family: Monaco, Consolas, '&quot;Lucida Console&quot;', '&quot;Courier New&quot;', serif; font-size: 12px; ">&nbsp; &nbsp;&nbsp; &nbsp;t=*pt[j-1];* pt[j-1] =* pt[i]; *pt[i]=t;<br style="word-wrap: break-word; line-height: normal; "></li><li style="word-wrap: break-word; margin-top: 0px; margin-right: 0px; margin-bottom: 0px; margin-left: 2em; padding-top: 0px; padding-right: 0px; padding-bottom: 0px; padding-left: 10px; line-height: 1.8em; list-style-type: decimal-leading-zero; font-family: Monaco, Consolas, '&quot;Lucida Console&quot;', '&quot;Courier New&quot;', serif; font-size: 12px; ">&nbsp; &nbsp;&nbsp; &nbsp;for (i=VARIABLES-1;i&gt;j;i--,j++)<br style="word-wrap: break-word; line-height: normal; "></li><li style="word-wrap: break-word; margin-top: 0px; margin-right: 0px; margin-bottom: 0px; margin-left: 2em; padding-top: 0px; padding-right: 0px; padding-bottom: 0px; padding-left: 10px; line-height: 1.8em; list-style-type: decimal-leading-zero; font-family: Monaco, Consolas, '&quot;Lucida Console&quot;', '&quot;Courier New&quot;', serif; font-size: 12px; ">&nbsp; &nbsp;&nbsp; &nbsp;{&nbsp; &nbsp;t=*pt[j]; *pt[j] =* pt[i]; *pt[i]=t;&nbsp; &nbsp;}<br style="word-wrap: break-word; line-height: normal; "></li><li style="word-wrap: break-word; margin-top: 0px; margin-right: 0px; margin-bottom: 0px; margin-left: 2em; padding-top: 0px; padding-right: 0px; padding-bottom: 0px; padding-left: 10px; line-height: 1.8em; list-style-type: decimal-leading-zero; font-family: Monaco, Consolas, '&quot;Lucida Console&quot;', '&quot;Courier New&quot;', serif; font-size: 12px; ">&nbsp; &nbsp;}<br style="word-wrap: break-word; line-height: normal; "></li><li style="word-wrap: break-word; margin-top: 0px; margin-right: 0px; margin-bottom: 0px; margin-left: 2em; padding-top: 0px; padding-right: 0px; padding-bottom: 0px; padding-left: 10px; line-height: 1.8em; list-style-type: decimal-leading-zero; font-family: Monaco, Consolas, '&quot;Lucida Console&quot;', '&quot;Courier New&quot;', serif; font-size: 12px; ">}</li></ol></div><em style="word-wrap: break-word; text-align: left; font-style: normal; line-height: normal; margin-left: 43px; color: rgb(102, 102, 102); font-size: 12px; cursor: pointer; ">复制代码</em></div>从上述问题解决的方法中，最重要的因素就是确定某种方法来确定所有的候选解。下面再用一个示例来加以说明。<br style="word-wrap: break-word; line-height: normal; ">【问题】&nbsp; &nbsp;背包问题<br style="word-wrap: break-word; line-height: normal; ">问题描述：有不同价值、不同重量的物品n件，求从这n件物品中选取一部分物品的选择方案，使选中物品的总重量不超过指定的限制重量，但选中物品的价值之和最大。<br style="word-wrap: break-word; line-height: normal; ">设n个物品的重量和价值分别存储于数组w[ ]和v[ ]中，限制重量为tw。考虑一个n元组（x0，x1，&#8230;，xn-1），其中xi=0 表示第i个物品没有选取，而xi=1则表示第i个物品被选取。显然这个n元组等价于一个选择方案。用枚举法解决背包问题，需要枚举所有的选取方案，而根据上述方法，我们只要枚举所有的n元组，就可以得到问题的解。<br style="word-wrap: break-word; line-height: normal; ">显然，每个分量取值为0或1的n元组的个数共为2n个。而每个n元组其实对应了一个长度为n的二进制数，且这些二进制数的取值范围为0～2n-1。因此，如果把0～2n-1分别转化为相应的二进制数，则可以得到我们所需要的2n个n元组。<br style="word-wrap: break-word; line-height: normal; ">【算法】<div class="blockcode" style="word-wrap: break-word; line-height: normal; margin-top: 10px; margin-right: 0px; margin-bottom: 10px; margin-left: 0px; padding-top: 10px; padding-right: 0px; padding-bottom: 5px; padding-left: 10px; width: 586px; border-left-color: rgb(204, 204, 204); background-image: url(http://www.cppleyuan.com/images/default/codebg.gif); background-attachment: initial; background-origin: initial; background-clip: initial; background-color: rgb(247, 247, 247); overflow-x: hidden; overflow-y: hidden; background-position: 0px 0px; background-repeat: no-repeat repeat; "><div id="code2" style="word-wrap: break-word; line-height: normal; "><ol style="word-wrap: break-word; line-height: normal; margin-top: 0px; margin-right: 0px; margin-bottom: 0px; margin-left: 10px; padding-top: 0px; padding-right: 0px; padding-bottom: 0px; padding-left: 0px; "><li style="word-wrap: break-word; margin-top: 0px; margin-right: 0px; margin-bottom: 0px; margin-left: 2em; padding-top: 0px; padding-right: 0px; padding-bottom: 0px; padding-left: 10px; line-height: 1.8em; list-style-type: decimal-leading-zero; font-family: Monaco, Consolas, '&quot;Lucida Console&quot;', '&quot;Courier New&quot;', serif; font-size: 12px; ">maxv=0;<br style="word-wrap: break-word; line-height: normal; "></li><li style="word-wrap: break-word; margin-top: 0px; margin-right: 0px; margin-bottom: 0px; margin-left: 2em; padding-top: 0px; padding-right: 0px; padding-bottom: 0px; padding-left: 10px; line-height: 1.8em; list-style-type: decimal-leading-zero; font-family: Monaco, Consolas, '&quot;Lucida Console&quot;', '&quot;Courier New&quot;', serif; font-size: 12px; ">for (i=0;i&lt;2n;i++)<br style="word-wrap: break-word; line-height: normal; "></li><li style="word-wrap: break-word; margin-top: 0px; margin-right: 0px; margin-bottom: 0px; margin-left: 2em; padding-top: 0px; padding-right: 0px; padding-bottom: 0px; padding-left: 10px; line-height: 1.8em; list-style-type: decimal-leading-zero; font-family: Monaco, Consolas, '&quot;Lucida Console&quot;', '&quot;Courier New&quot;', serif; font-size: 12px; ">{&nbsp; &nbsp;B[0..n-1]=0;<br style="word-wrap: break-word; line-height: normal; "></li><li style="word-wrap: break-word; margin-top: 0px; margin-right: 0px; margin-bottom: 0px; margin-left: 2em; padding-top: 0px; padding-right: 0px; padding-bottom: 0px; padding-left: 10px; line-height: 1.8em; list-style-type: decimal-leading-zero; font-family: Monaco, Consolas, '&quot;Lucida Console&quot;', '&quot;Courier New&quot;', serif; font-size: 12px; ">&nbsp; &nbsp;把i转化为二进制数，存储于数组B中;<br style="word-wrap: break-word; line-height: normal; "></li><li style="word-wrap: break-word; margin-top: 0px; margin-right: 0px; margin-bottom: 0px; margin-left: 2em; padding-top: 0px; padding-right: 0px; padding-bottom: 0px; padding-left: 10px; line-height: 1.8em; list-style-type: decimal-leading-zero; font-family: Monaco, Consolas, '&quot;Lucida Console&quot;', '&quot;Courier New&quot;', serif; font-size: 12px; ">&nbsp; &nbsp;temp_w=0;<br style="word-wrap: break-word; line-height: normal; "></li><li style="word-wrap: break-word; margin-top: 0px; margin-right: 0px; margin-bottom: 0px; margin-left: 2em; padding-top: 0px; padding-right: 0px; padding-bottom: 0px; padding-left: 10px; line-height: 1.8em; list-style-type: decimal-leading-zero; font-family: Monaco, Consolas, '&quot;Lucida Console&quot;', '&quot;Courier New&quot;', serif; font-size: 12px; ">&nbsp; &nbsp;temp_v=0;<br style="word-wrap: break-word; line-height: normal; "></li><li style="word-wrap: break-word; margin-top: 0px; margin-right: 0px; margin-bottom: 0px; margin-left: 2em; padding-top: 0px; padding-right: 0px; padding-bottom: 0px; padding-left: 10px; line-height: 1.8em; list-style-type: decimal-leading-zero; font-family: Monaco, Consolas, '&quot;Lucida Console&quot;', '&quot;Courier New&quot;', serif; font-size: 12px; ">&nbsp; &nbsp;for (j=0;j&lt;n;j++)<br style="word-wrap: break-word; line-height: normal; "></li><li style="word-wrap: break-word; margin-top: 0px; margin-right: 0px; margin-bottom: 0px; margin-left: 2em; padding-top: 0px; padding-right: 0px; padding-bottom: 0px; padding-left: 10px; line-height: 1.8em; list-style-type: decimal-leading-zero; font-family: Monaco, Consolas, '&quot;Lucida Console&quot;', '&quot;Courier New&quot;', serif; font-size: 12px; ">&nbsp; &nbsp;{&nbsp; &nbsp;if (B[j]==1)<br style="word-wrap: break-word; line-height: normal; "></li><li style="word-wrap: break-word; margin-top: 0px; margin-right: 0px; margin-bottom: 0px; margin-left: 2em; padding-top: 0px; padding-right: 0px; padding-bottom: 0px; padding-left: 10px; line-height: 1.8em; list-style-type: decimal-leading-zero; font-family: Monaco, Consolas, '&quot;Lucida Console&quot;', '&quot;Courier New&quot;', serif; font-size: 12px; ">&nbsp; &nbsp;&nbsp; &nbsp;{&nbsp; &nbsp;temp_w=temp_w+w[j];<br style="word-wrap: break-word; line-height: normal; "></li><li style="word-wrap: break-word; margin-top: 0px; margin-right: 0px; margin-bottom: 0px; margin-left: 2em; padding-top: 0px; padding-right: 0px; padding-bottom: 0px; padding-left: 10px; line-height: 1.8em; list-style-type: decimal-leading-zero; font-family: Monaco, Consolas, '&quot;Lucida Console&quot;', '&quot;Courier New&quot;', serif; font-size: 12px; ">&nbsp; &nbsp;&nbsp; &nbsp;&nbsp; &nbsp;temp_v=temp_v+v[j];<br style="word-wrap: break-word; line-height: normal; "></li><li style="word-wrap: break-word; margin-top: 0px; margin-right: 0px; margin-bottom: 0px; margin-left: 2em; padding-top: 0px; padding-right: 0px; padding-bottom: 0px; padding-left: 10px; line-height: 1.8em; list-style-type: decimal-leading-zero; font-family: Monaco, Consolas, '&quot;Lucida Console&quot;', '&quot;Courier New&quot;', serif; font-size: 12px; ">&nbsp; &nbsp;&nbsp; &nbsp;}<br style="word-wrap: break-word; line-height: normal; "></li><li style="word-wrap: break-word; margin-top: 0px; margin-right: 0px; margin-bottom: 0px; margin-left: 2em; padding-top: 0px; padding-right: 0px; padding-bottom: 0px; padding-left: 10px; line-height: 1.8em; list-style-type: decimal-leading-zero; font-family: Monaco, Consolas, '&quot;Lucida Console&quot;', '&quot;Courier New&quot;', serif; font-size: 12px; ">&nbsp; &nbsp;&nbsp; &nbsp;if ((temp_w&lt;=tw)&amp;&amp;(temp_v&gt;maxv))<br style="word-wrap: break-word; line-height: normal; "></li><li style="word-wrap: break-word; margin-top: 0px; margin-right: 0px; margin-bottom: 0px; margin-left: 2em; padding-top: 0px; padding-right: 0px; padding-bottom: 0px; padding-left: 10px; line-height: 1.8em; list-style-type: decimal-leading-zero; font-family: Monaco, Consolas, '&quot;Lucida Console&quot;', '&quot;Courier New&quot;', serif; font-size: 12px; ">&nbsp; &nbsp;&nbsp; &nbsp;{&nbsp; &nbsp;maxv=temp_v;<br style="word-wrap: break-word; line-height: normal; "></li><li style="word-wrap: break-word; margin-top: 0px; margin-right: 0px; margin-bottom: 0px; margin-left: 2em; padding-top: 0px; padding-right: 0px; padding-bottom: 0px; padding-left: 10px; line-height: 1.8em; list-style-type: decimal-leading-zero; font-family: Monaco, Consolas, '&quot;Lucida Console&quot;', '&quot;Courier New&quot;', serif; font-size: 12px; ">&nbsp; &nbsp;&nbsp; &nbsp;&nbsp; &nbsp;保存该B数组；<br style="word-wrap: break-word; line-height: normal; "></li><li style="word-wrap: break-word; margin-top: 0px; margin-right: 0px; margin-bottom: 0px; margin-left: 2em; padding-top: 0px; padding-right: 0px; padding-bottom: 0px; padding-left: 10px; line-height: 1.8em; list-style-type: decimal-leading-zero; font-family: Monaco, Consolas, '&quot;Lucida Console&quot;', '&quot;Courier New&quot;', serif; font-size: 12px; ">&nbsp; &nbsp;&nbsp; &nbsp;}<br style="word-wrap: break-word; line-height: normal; "></li><li style="word-wrap: break-word; margin-top: 0px; margin-right: 0px; margin-bottom: 0px; margin-left: 2em; padding-top: 0px; padding-right: 0px; padding-bottom: 0px; padding-left: 10px; line-height: 1.8em; list-style-type: decimal-leading-zero; font-family: Monaco, Consolas, '&quot;Lucida Console&quot;', '&quot;Courier New&quot;', serif; font-size: 12px; ">&nbsp; &nbsp;}<br style="word-wrap: break-word; line-height: normal; "></li><li style="word-wrap: break-word; margin-top: 0px; margin-right: 0px; margin-bottom: 0px; margin-left: 2em; padding-top: 0px; padding-right: 0px; padding-bottom: 0px; padding-left: 10px; line-height: 1.8em; list-style-type: decimal-leading-zero; font-family: Monaco, Consolas, '&quot;Lucida Console&quot;', '&quot;Courier New&quot;', serif; font-size: 12px; ">}</li></ol></div><em style="word-wrap: break-word; text-align: left; font-style: normal; line-height: normal; margin-left: 43px; color: rgb(102, 102, 102); font-size: 12px; cursor: pointer; ">复制代码</em></div></td></tr></tbody></table></div><div id="post_rate_div_9832" style="word-wrap: break-word; line-height: normal; "></div><div class="useraction" style="word-wrap: break-word; line-height: normal; height: 50px; width: 110px; clear: both; display: block; margin-top: 20px; margin-right: auto; margin-bottom: 20px; margin-left: auto; "></div></span></font></div></div><p style="margin-top: 5px; margin-right: auto; margin-bottom: 5px; margin-left: auto; text-indent: 0px; font-family: verdana, 'courier new'; font-size: 14px; line-height: 21px; "></p><p style="margin-top: 5px; margin-right: auto; margin-bottom: 5px; margin-left: auto; text-indent: 0px; font-family: verdana, 'courier new'; font-size: 14px; line-height: 21px; ">&nbsp;</p>
<img src ="http://www.cppblog.com/MiYu/aggbug/124962.html" width = "1" height = "1" /><br><br><div align=right><a style="text-decoration:none;" href="http://www.cppblog.com/MiYu/" target="_blank">MiYu</a> 2010-08-27 19:13 <a href="http://www.cppblog.com/MiYu/archive/2010/08/27/124962.html#Feedback" target="_blank" style="text-decoration:none;">发表评论</a></div>]]></description></item><item><title>HDOJ 1016 HDU 1016 Prime Ring Problem ACM 1016 IN HDU</title><link>http://www.cppblog.com/MiYu/archive/2010/08/18/123815.html</link><dc:creator>MiYu</dc:creator><author>MiYu</author><pubDate>Wed, 18 Aug 2010 04:32:00 GMT</pubDate><guid>http://www.cppblog.com/MiYu/archive/2010/08/18/123815.html</guid><wfw:comment>http://www.cppblog.com/MiYu/comments/123815.html</wfw:comment><comments>http://www.cppblog.com/MiYu/archive/2010/08/18/123815.html#Feedback</comments><slash:comments>0</slash:comments><wfw:commentRss>http://www.cppblog.com/MiYu/comments/commentRss/123815.html</wfw:commentRss><trackback:ping>http://www.cppblog.com/MiYu/services/trackbacks/123815.html</trackback:ping><description><![CDATA[<div style="background-color: rgb(238, 238, 238); font-size: 13px; border-left-color: rgb(204, 204, 204); padding-right: 5px; padding-bottom: 4px; padding-left: 4px; padding-top: 4px; width: 98%; word-break: break-all; "><!--<br><br>Code highlighting produced by Actipro CodeHighlighter (freeware)<br>http://www.CodeHighlighter.com/<br><br>--><span style="color: #000000; ">题目地址:</span></div><div style="background-color: rgb(238, 238, 238); font-size: 13px; border-left-color: rgb(204, 204, 204); padding-right: 5px; padding-bottom: 4px; padding-left: 4px; padding-top: 4px; width: 98%; word-break: break-all; "><span style="color: #000000; "><span class="Apple-tab-span" style="white-space:pre">	http://acm.hdu.edu.cn/showproblem.php?pid=1016</span></span></div><div style="background-color: rgb(238, 238, 238); font-size: 13px; border-left-color: rgb(204, 204, 204); padding-right: 5px; padding-bottom: 4px; padding-left: 4px; padding-top: 4px; width: 98%; word-break: break-all; ">题目描述:</div><div style="background-color: rgb(238, 238, 238); font-size: 13px; border-left-color: rgb(204, 204, 204); padding-right: 5px; padding-bottom: 4px; padding-left: 4px; padding-top: 4px; width: 98%; word-break: break-all; "><span  style="font-size: medium; "><h1 style="color: rgb(26, 92, 200); text-align: center; ">Prime Ring Problem</h1><font><strong><span style="font-family: Arial; font-size: 12px; font-weight: bold; color: green; ">Time Limit: 4000/2000 MS (Java/Others)&nbsp;&nbsp;&nbsp;&nbsp;Memory Limit: 65536/32768 K (Java/Others)<br>Total Submission(s): 6150&nbsp;&nbsp;&nbsp;&nbsp;Accepted Submission(s): 2745<br></span></strong></font><br><br><div class="panel_title" align="left" style="height: 38px; background-image: url(http://acm.hdu.edu.cn/images/panel-title.png); background-attachment: initial; background-origin: initial; background-clip: initial; background-color: transparent; padding-top: 0px; padding-right: 14px; padding-bottom: 0px; padding-left: 14px; color: rgb(124, 169, 237); font-size: 18px; font-family: Arial; font-weight: bold; background-position: 0% 100%; background-repeat: no-repeat no-repeat; ">Problem Description</div><div class="panel_content" style="height: auto; background-image: url(http://acm.hdu.edu.cn/images/panel-content.png); background-attachment: initial; background-origin: initial; background-clip: initial; background-color: initial; margin-top: 0px; margin-right: 0px; margin-bottom: 0px; margin-left: 0px; padding-top: 0px; padding-right: 20px; padding-bottom: 0px; padding-left: 20px; font-size: 14px; font-family: 'Times New Roman'; text-align: left; background-position: initial initial; background-repeat: no-repeat repeat; ">A ring is compose of n circles as shown in diagram. Put natural number 1, 2, ..., n into each circle separately, and the sum of numbers in two adjacent circles should be a prime.<br><br>Note: the number of first circle should always be 1.<br><br><span class="Apple-tab-span" style="white-space:pre">							</span><img src="http://acm.hdu.edu.cn/data/images/1016-1.gif" style="border-top-style: none; border-right-style: none; border-bottom-style: none; border-left-style: none; border-width: initial; border-color: initial; "></div><br><div class="panel_title" align="left" style="height: 38px; background-image: url(http://acm.hdu.edu.cn/images/panel-title.png); background-attachment: initial; background-origin: initial; background-clip: initial; background-color: transparent; padding-top: 0px; padding-right: 14px; padding-bottom: 0px; padding-left: 14px; color: rgb(124, 169, 237); font-size: 18px; font-family: Arial; font-weight: bold; background-position: 0% 100%; background-repeat: no-repeat no-repeat; ">Input</div><div class="panel_content" style="height: auto; background-image: url(http://acm.hdu.edu.cn/images/panel-content.png); background-attachment: initial; background-origin: initial; background-clip: initial; background-color: initial; margin-top: 0px; margin-right: 0px; margin-bottom: 0px; margin-left: 0px; padding-top: 0px; padding-right: 20px; padding-bottom: 0px; padding-left: 20px; font-size: 14px; font-family: 'Times New Roman'; text-align: left; background-position: initial initial; background-repeat: no-repeat repeat; ">n (0 &lt; n &lt; 20).</div><br><div class="panel_title" align="left" style="height: 38px; background-image: url(http://acm.hdu.edu.cn/images/panel-title.png); background-attachment: initial; background-origin: initial; background-clip: initial; background-color: transparent; padding-top: 0px; padding-right: 14px; padding-bottom: 0px; padding-left: 14px; color: rgb(124, 169, 237); font-size: 18px; font-family: Arial; font-weight: bold; background-position: 0% 100%; background-repeat: no-repeat no-repeat; ">Output</div><div class="panel_content" style="height: auto; background-image: url(http://acm.hdu.edu.cn/images/panel-content.png); background-attachment: initial; background-origin: initial; background-clip: initial; background-color: initial; margin-top: 0px; margin-right: 0px; margin-bottom: 0px; margin-left: 0px; padding-top: 0px; padding-right: 20px; padding-bottom: 0px; padding-left: 20px; font-size: 14px; font-family: 'Times New Roman'; text-align: left; background-position: initial initial; background-repeat: no-repeat repeat; ">The output format is shown as sample below. Each row represents a series of circle numbers in the ring beginning from 1 clockwisely and anticlockwisely. The order of numbers must satisfy the above requirements. Print solutions in lexicographical order.<br><br>You are to write a program that completes above process.<br><br>Print a blank line after each case.</div><br><div class="panel_title" align="left" style="height: 38px; background-image: url(http://acm.hdu.edu.cn/images/panel-title.png); background-attachment: initial; background-origin: initial; background-clip: initial; background-color: transparent; padding-top: 0px; padding-right: 14px; padding-bottom: 0px; padding-left: 14px; color: rgb(124, 169, 237); font-size: 18px; font-family: Arial; font-weight: bold; background-position: 0% 100%; background-repeat: no-repeat no-repeat; ">Sample Input</div><div class="panel_content" style="height: auto; background-image: url(http://acm.hdu.edu.cn/images/panel-content.png); background-attachment: initial; background-origin: initial; background-clip: initial; background-color: initial; margin-top: 0px; margin-right: 0px; margin-bottom: 0px; margin-left: 0px; padding-top: 0px; padding-right: 20px; padding-bottom: 0px; padding-left: 20px; font-size: 14px; font-family: 'Times New Roman'; text-align: left; background-position: initial initial; background-repeat: no-repeat repeat; "><pre style="margin-top: 0px; margin-right: 0px; margin-bottom: 0px; margin-left: 0px; font-size: 14px; "><div style="font-family: 'Courier New', Courier, monospace; ">6
8</div></pre></div><br><div class="panel_title" align="left" style="height: 38px; background-image: url(http://acm.hdu.edu.cn/images/panel-title.png); background-attachment: initial; background-origin: initial; background-clip: initial; background-color: transparent; padding-top: 0px; padding-right: 14px; padding-bottom: 0px; padding-left: 14px; color: rgb(124, 169, 237); font-size: 18px; font-family: Arial; font-weight: bold; background-position: 0% 100%; background-repeat: no-repeat no-repeat; ">Sample Output</div><div class="panel_content" style="height: auto; background-image: url(http://acm.hdu.edu.cn/images/panel-content.png); background-attachment: initial; background-origin: initial; background-clip: initial; background-color: initial; margin-top: 0px; margin-right: 0px; margin-bottom: 0px; margin-left: 0px; padding-top: 0px; padding-right: 20px; padding-bottom: 0px; padding-left: 20px; font-size: 14px; font-family: 'Times New Roman'; text-align: left; background-position: initial initial; background-repeat: no-repeat repeat; "><pre style="margin-top: 0px; margin-right: 0px; margin-bottom: 0px; margin-left: 0px; font-size: 14px; "><div style="font-family: 'Courier New', Courier, monospace; ">Case 1:
1 4 3 2 5 6
1 6 5 2 3 4

Case 2:
1 2 3 8 5 6 7 4
1 2 5 8 3 4 7 6
1 4 7 6 5 8 3 2
1 6 7 4 3 8 5 2</div><div style="font-family: 'Courier New', Courier, monospace; "><div style="background-color: rgb(238, 238, 238); font-size: 13px; border-left-color: rgb(204, 204, 204); padding-right: 5px; padding-bottom: 4px; padding-left: 4px; padding-top: 4px; width: 98%; word-break: break-all; "><!--<br><br>Code highlighting produced by Actipro CodeHighlighter (freeware)<br>http://www.CodeHighlighter.com/<br><br>--><span style="color: #000000; ">题目分析:</span></div><div style="background-color: rgb(238, 238, 238); font-size: 13px; border-left-color: rgb(204, 204, 204); padding-right: 5px; padding-bottom: 4px; padding-left: 4px; padding-top: 4px; width: 98%; word-break: break-all; "><span style="color: #000000; "><span class="Apple-tab-span" style="white-space:pre">	典型的 DFS 题目, 不需要 什么剪枝, 直接</span> <span class="Apple-tab-span" style="white-space:pre">穷举 + 回溯 就OK了, 不过值得一提的是,这题输出很BT,  一般的 前后 输出 回车 , 第一个回车用
if( n == 1 )  回车;  来做PE了好几次,  最后直接在程序最后</span> 输出2个回车符竟然就A了, YM啊...........<span class="Apple-tab-span" style="white-space:pre">	</span></span></div><div style="background-color: rgb(238, 238, 238); font-size: 13px; border-left-color: rgb(204, 204, 204); padding-right: 5px; padding-bottom: 4px; padding-left: 4px; padding-top: 4px; width: 98%; word-break: break-all; ">代码如下:</div><div style="background-color: rgb(238, 238, 238); font-size: 13px; border-left-color: rgb(204, 204, 204); padding-right: 5px; padding-bottom: 4px; padding-left: 4px; padding-top: 4px; width: 98%; word-break: break-all; ">/*
MiYu原创, 转帖请注明 : 转载自 ______________白白の屋
          http://www.cppblog.com/MiYu
Author By : MiYu
Test      :
Program   :
*/

#include &lt;iostream&gt;
using namespace std;
bool prim[25];
int res[25];
bool hash[25];
int N;
void setPrim ()
{
     memset ( prim, 0, sizeof ( prim ) );
     prim[2] = prim[3] = prim[5] = prim[7] = prim[11] = prim[13] = prim[17] = prim[19] = prim[23] = true;    
}
bool DFS ( int num , int n )
{
     res[n] = num;
     if ( n &gt; N )
     {
           return false;     
     }
     if ( n == N - 1 )
     {    
          for ( int i = 2; i &lt;= N; ++ i )
          {
                if ( prim[num + i] &amp;&amp; prim[ i + 1 ] &amp;&amp; !hash[i] ) 
                {
                     res[n+1] =  i;
                     for ( int i = 1; i &lt;= N; ++ i )
                           printf ( i == 1 ? "%d" : " %d",res[i] );
                     putchar ( '\n' );
                }
          }
     }
     for ( int i = 2; i &lt;= N; ++ i )
     {
           if ( prim[ num + i ] &amp;&amp; !hash[i] )
           {    
                hash[i] = true;
                DFS ( i, n + 1 );
                hash[i] = false;   
           }
     } 
     return false;     
}
int main ()
{
    setPrim ();
    int ca = 1;
    while ( cin &gt;&gt; N )
    {
            sizeof ( hash, 0 , sizeof ( hash ) );
            printf ( "Case %d:\n",ca++ );
            hash[1] = true;
            DFS ( 1, 1 );
            putchar ( '\n' );
    }
    return 0;
}</div><br></div></pre></div></span></div><img src ="http://www.cppblog.com/MiYu/aggbug/123815.html" width = "1" height = "1" /><br><br><div align=right><a style="text-decoration:none;" href="http://www.cppblog.com/MiYu/" target="_blank">MiYu</a> 2010-08-18 12:32 <a href="http://www.cppblog.com/MiYu/archive/2010/08/18/123815.html#Feedback" target="_blank" style="text-decoration:none;">发表评论</a></div>]]></description></item><item><title>HDOJ HDU 2079 选课时间 ACM 2079 IN HDU </title><link>http://www.cppblog.com/MiYu/archive/2010/08/06/122407.html</link><dc:creator>MiYu</dc:creator><author>MiYu</author><pubDate>Fri, 06 Aug 2010 02:14:00 GMT</pubDate><guid>http://www.cppblog.com/MiYu/archive/2010/08/06/122407.html</guid><wfw:comment>http://www.cppblog.com/MiYu/comments/122407.html</wfw:comment><comments>http://www.cppblog.com/MiYu/archive/2010/08/06/122407.html#Feedback</comments><slash:comments>0</slash:comments><wfw:commentRss>http://www.cppblog.com/MiYu/comments/commentRss/122407.html</wfw:commentRss><trackback:ping>http://www.cppblog.com/MiYu/services/trackbacks/122407.html</trackback:ping><description><![CDATA[<span style="COLOR: #000000">//MiYu原创, 转帖请注明 : 转载自 <a href="http://www.cppblog.com/MiYu/">______________白白の屋</a></span><br><br>题目地址:<br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;<a href="http://acm.hdu.edu.cn/showproblem.php?pid=2079">http://acm.hdu.edu.cn/showproblem.php?pid=2079</a><br>题目描述:<br>
<div style="BORDER-BOTTOM: #cccccc 1px solid; BORDER-LEFT: #cccccc 1px solid; PADDING-BOTTOM: 4px; BACKGROUND-COLOR: #eeeeee; PADDING-LEFT: 4px; WIDTH: 98%; PADDING-RIGHT: 5px; FONT-SIZE: 13px; WORD-BREAK: break-all; BORDER-TOP: #cccccc 1px solid; BORDER-RIGHT: #cccccc 1px solid; PADDING-TOP: 4px"><span style="COLOR: #000000">Describtion<br>又到了选课的时间了，xhd看着选课表发呆，为了想让下一学期好过点，他想知道学n个学分共有多少组合。你来帮帮他吧。（xhd认为一样学分的课没区别）<br>&nbsp;<br><br>Input<br>输入数据的第一行是一个数据T，表示有T组数据。<br>每组数据的第一行是两个整数n(</span><span style="COLOR: #000000">1</span><span style="COLOR: #000000">&nbsp;</span><span style="COLOR: #000000">&lt;=</span><span style="COLOR: #000000">&nbsp;n&nbsp;</span><span style="COLOR: #000000">&lt;=</span><span style="COLOR: #000000">&nbsp;</span><span style="COLOR: #000000">40</span><span style="COLOR: #000000">)，k(</span><span style="COLOR: #000000">1</span><span style="COLOR: #000000">&nbsp;</span><span style="COLOR: #000000">&lt;=</span><span style="COLOR: #000000">&nbsp;k&nbsp;</span><span style="COLOR: #000000">&lt;=</span><span style="COLOR: #000000">&nbsp;</span><span style="COLOR: #000000">8</span><span style="COLOR: #000000">)。<br>接着有k行，每行有两个整数a(</span><span style="COLOR: #000000">1</span><span style="COLOR: #000000">&nbsp;</span><span style="COLOR: #000000">&lt;=</span><span style="COLOR: #000000">&nbsp;a&nbsp;</span><span style="COLOR: #000000">&lt;=</span><span style="COLOR: #000000">&nbsp;</span><span style="COLOR: #000000">8</span><span style="COLOR: #000000">),b(</span><span style="COLOR: #000000">1</span><span style="COLOR: #000000">&nbsp;</span><span style="COLOR: #000000">&lt;=</span><span style="COLOR: #000000">&nbsp;b&nbsp;</span><span style="COLOR: #000000">&lt;=</span><span style="COLOR: #000000">&nbsp;</span><span style="COLOR: #000000">10</span><span style="COLOR: #000000">)，表示学分为a的课有b门。<br>&nbsp;<br><br>Output<br>对于每组输入数据，输出一个整数，表示学n个学分的组合数。</span></div>
<br>很简单的题目, 看上去就是直接母函数了, 而且还比较标准.<br>代码如下:<br>
<div style="BORDER-BOTTOM: #cccccc 1px solid; BORDER-LEFT: #cccccc 1px solid; PADDING-BOTTOM: 4px; BACKGROUND-COLOR: #eeeeee; PADDING-LEFT: 4px; WIDTH: 98%; PADDING-RIGHT: 5px; FONT-SIZE: 13px; WORD-BREAK: break-all; BORDER-TOP: #cccccc 1px solid; BORDER-RIGHT: #cccccc 1px solid; PADDING-TOP: 4px"><span style="COLOR: #000000"><span style="COLOR: #000000">//MiYu原创, 转帖请注明 : 转载自 <a href="http://www.cppblog.com/MiYu/">______________白白の屋</a></span><br><br>#include&nbsp;</span><span style="COLOR: #000000">&lt;</span><span style="COLOR: #000000">iostream</span><span style="COLOR: #000000">&gt;</span><span style="COLOR: #000000"><br></span><span style="COLOR: #0000ff">using</span><span style="COLOR: #000000">&nbsp;</span><span style="COLOR: #0000ff">namespace</span><span style="COLOR: #000000">&nbsp;std;<br></span><span style="COLOR: #0000ff">int</span><span style="COLOR: #000000">&nbsp;score[</span><span style="COLOR: #000000">9</span><span style="COLOR: #000000">];<br></span><span style="COLOR: #0000ff">int</span><span style="COLOR: #000000">&nbsp;amt[</span><span style="COLOR: #000000">9</span><span style="COLOR: #000000">];<br></span><span style="COLOR: #0000ff">int</span><span style="COLOR: #000000">&nbsp;num1[</span><span style="COLOR: #000000">41</span><span style="COLOR: #000000">];<br></span><span style="COLOR: #0000ff">int</span><span style="COLOR: #000000">&nbsp;num2[</span><span style="COLOR: #000000">41</span><span style="COLOR: #000000">];<br></span><span style="COLOR: #0000ff">int</span><span style="COLOR: #000000">&nbsp;main&nbsp;()<br>{<br>&nbsp;&nbsp;&nbsp;&nbsp;</span><span style="COLOR: #0000ff">int</span><span style="COLOR: #000000">&nbsp;T;<br>&nbsp;&nbsp;&nbsp;&nbsp;</span><span style="COLOR: #0000ff">while</span><span style="COLOR: #000000">&nbsp;(&nbsp;cin&nbsp;</span><span style="COLOR: #000000">&gt;&gt;</span><span style="COLOR: #000000">&nbsp;T&nbsp;)<br>&nbsp;&nbsp;&nbsp;&nbsp;{<br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;</span><span style="COLOR: #0000ff">while</span><span style="COLOR: #000000">&nbsp;(&nbsp;T&nbsp;</span><span style="COLOR: #000000">--</span><span style="COLOR: #000000">&nbsp;)<br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;{<br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;</span><span style="COLOR: #0000ff">int</span><span style="COLOR: #000000">&nbsp;N,K;<br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;cin&nbsp;</span><span style="COLOR: #000000">&gt;&gt;</span><span style="COLOR: #000000">&nbsp;N&nbsp;</span><span style="COLOR: #000000">&gt;&gt;</span><span style="COLOR: #000000">&nbsp;K;<br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;</span><span style="COLOR: #0000ff">for</span><span style="COLOR: #000000">&nbsp;(&nbsp;</span><span style="COLOR: #0000ff">int</span><span style="COLOR: #000000">&nbsp;i&nbsp;</span><span style="COLOR: #000000">=</span><span style="COLOR: #000000">&nbsp;</span><span style="COLOR: #000000">1</span><span style="COLOR: #000000">;&nbsp;i</span><span style="COLOR: #000000">&lt;=</span><span style="COLOR: #000000">&nbsp;K;&nbsp;</span><span style="COLOR: #000000">++</span><span style="COLOR: #000000">&nbsp;i&nbsp;)<br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;{<br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;cin&nbsp;</span><span style="COLOR: #000000">&gt;&gt;</span><span style="COLOR: #000000">&nbsp;score[i]&nbsp;</span><span style="COLOR: #000000">&gt;&gt;</span><span style="COLOR: #000000">&nbsp;amt[i];&nbsp;<br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;}&nbsp;<br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;</span><span style="COLOR: #0000ff">for</span><span style="COLOR: #000000">&nbsp;(&nbsp;</span><span style="COLOR: #0000ff">int</span><span style="COLOR: #000000">&nbsp;i&nbsp;</span><span style="COLOR: #000000">=</span><span style="COLOR: #000000">&nbsp;</span><span style="COLOR: #000000">0</span><span style="COLOR: #000000">;&nbsp;i&nbsp;</span><span style="COLOR: #000000">&lt;=</span><span style="COLOR: #000000">&nbsp;N;&nbsp;</span><span style="COLOR: #000000">++</span><span style="COLOR: #000000">&nbsp;i&nbsp;)<br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;{<br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;num1[i]&nbsp;</span><span style="COLOR: #000000">=</span><span style="COLOR: #000000">&nbsp;num2[i]&nbsp;</span><span style="COLOR: #000000">=</span><span style="COLOR: #000000">&nbsp;</span><span style="COLOR: #000000">0</span><span style="COLOR: #000000">;&nbsp;<br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;}<br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;num1[</span><span style="COLOR: #000000">0</span><span style="COLOR: #000000">]&nbsp;</span><span style="COLOR: #000000">=</span><span style="COLOR: #000000">&nbsp;</span><span style="COLOR: #000000">1</span><span style="COLOR: #000000">;<br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;</span><span style="COLOR: #0000ff">for</span><span style="COLOR: #000000">&nbsp;(&nbsp;</span><span style="COLOR: #0000ff">int</span><span style="COLOR: #000000">&nbsp;i&nbsp;</span><span style="COLOR: #000000">=</span><span style="COLOR: #000000">&nbsp;</span><span style="COLOR: #000000">1</span><span style="COLOR: #000000">;&nbsp;i&nbsp;</span><span style="COLOR: #000000">&lt;=</span><span style="COLOR: #000000">&nbsp;K;&nbsp;</span><span style="COLOR: #000000">++</span><span style="COLOR: #000000">&nbsp;i&nbsp;)<br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;{<br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;</span><span style="COLOR: #0000ff">for</span><span style="COLOR: #000000">&nbsp;(&nbsp;</span><span style="COLOR: #0000ff">int</span><span style="COLOR: #000000">&nbsp;j&nbsp;</span><span style="COLOR: #000000">=</span><span style="COLOR: #000000">&nbsp;</span><span style="COLOR: #000000">0</span><span style="COLOR: #000000">;&nbsp;j&nbsp;</span><span style="COLOR: #000000">&lt;=</span><span style="COLOR: #000000">&nbsp;N;&nbsp;</span><span style="COLOR: #000000">++</span><span style="COLOR: #000000">&nbsp;j&nbsp;)<br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;{<br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;</span><span style="COLOR: #0000ff">for</span><span style="COLOR: #000000">&nbsp;(&nbsp;</span><span style="COLOR: #0000ff">int</span><span style="COLOR: #000000">&nbsp;k&nbsp;</span><span style="COLOR: #000000">=</span><span style="COLOR: #000000">&nbsp;</span><span style="COLOR: #000000">0</span><span style="COLOR: #000000">;&nbsp;k&nbsp;</span><span style="COLOR: #000000">&lt;=</span><span style="COLOR: #000000">&nbsp;amt[i]&nbsp;</span><span style="COLOR: #000000">&amp;&amp;</span><span style="COLOR: #000000">&nbsp;k&nbsp;</span><span style="COLOR: #000000">*</span><span style="COLOR: #000000">&nbsp;score[i]&nbsp;</span><span style="COLOR: #000000">+</span><span style="COLOR: #000000">&nbsp;j&nbsp;</span><span style="COLOR: #000000">&lt;=</span><span style="COLOR: #000000">&nbsp;N;&nbsp;</span><span style="COLOR: #000000">++</span><span style="COLOR: #000000">&nbsp;k&nbsp;)<br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;{<br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;num2[&nbsp;k&nbsp;</span><span style="COLOR: #000000">*</span><span style="COLOR: #000000">&nbsp;score[i]&nbsp;</span><span style="COLOR: #000000">+</span><span style="COLOR: #000000">&nbsp;j&nbsp;]&nbsp;</span><span style="COLOR: #000000">+=</span><span style="COLOR: #000000">&nbsp;num1[j];<br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;}&nbsp;<br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;}&nbsp;<br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;</span><span style="COLOR: #0000ff">for</span><span style="COLOR: #000000">&nbsp;(&nbsp;</span><span style="COLOR: #0000ff">int</span><span style="COLOR: #000000">&nbsp;j&nbsp;</span><span style="COLOR: #000000">=</span><span style="COLOR: #000000">&nbsp;</span><span style="COLOR: #000000">0</span><span style="COLOR: #000000">;&nbsp;j&nbsp;</span><span style="COLOR: #000000">&lt;=</span><span style="COLOR: #000000">&nbsp;N;&nbsp;</span><span style="COLOR: #000000">++</span><span style="COLOR: #000000">&nbsp;j&nbsp;)<br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;{<br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;num1[j]&nbsp;</span><span style="COLOR: #000000">=</span><span style="COLOR: #000000">&nbsp;num2[j];<br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;num2[j]&nbsp;</span><span style="COLOR: #000000">=</span><span style="COLOR: #000000">&nbsp;</span><span style="COLOR: #000000">0</span><span style="COLOR: #000000">;<br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;}<br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;}<br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;cout&nbsp;</span><span style="COLOR: #000000">&lt;&lt;</span><span style="COLOR: #000000">&nbsp;num1[N]&nbsp;</span><span style="COLOR: #000000">&lt;&lt;</span><span style="COLOR: #000000">&nbsp;endl;<br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;}&nbsp;<br>&nbsp;&nbsp;&nbsp;&nbsp;}<br>&nbsp;&nbsp;&nbsp;&nbsp;</span><span style="COLOR: #0000ff">return</span><span style="COLOR: #000000">&nbsp;</span><span style="COLOR: #000000">0</span><span style="COLOR: #000000">;&nbsp;<br>}<br></span></div>
<br>这道题的数据是比较小的, 所以可以直接暴力AC,&nbsp; 这样想起来, 暴力似乎更加简单直观, 所以以后做题的时候应该先分析题目数据的规模, 以免浪费比赛时间, 当然,平常练习时不建议暴力. <br>暴力代码: (&nbsp;非本人所写, 据说HDU上 可以0k 0ms过, 没试过&nbsp;)<br>
<div style="BORDER-BOTTOM: #cccccc 1px solid; BORDER-LEFT: #cccccc 1px solid; PADDING-BOTTOM: 4px; BACKGROUND-COLOR: #eeeeee; PADDING-LEFT: 4px; WIDTH: 98%; PADDING-RIGHT: 5px; FONT-SIZE: 13px; WORD-BREAK: break-all; BORDER-TOP: #cccccc 1px solid; BORDER-RIGHT: #cccccc 1px solid; PADDING-TOP: 4px"><span style="COLOR: #000000">#include&nbsp;</span><span style="COLOR: #000000">&lt;</span><span style="COLOR: #000000">stdio.h</span><span style="COLOR: #000000">&gt;</span><span style="COLOR: #000000"><br><br></span><span style="COLOR: #0000ff">int</span><span style="COLOR: #000000">&nbsp;main(</span><span style="COLOR: #0000ff">void</span><span style="COLOR: #000000">)<br>{<br>&nbsp;&nbsp;&nbsp;&nbsp;</span><span style="COLOR: #0000ff">int</span><span style="COLOR: #000000">&nbsp;c[</span><span style="COLOR: #000000">9</span><span style="COLOR: #000000">],&nbsp;k,&nbsp;n,&nbsp;i;<br>&nbsp;&nbsp;&nbsp;&nbsp;</span><span style="COLOR: #0000ff">int</span><span style="COLOR: #000000">&nbsp;count;<br>&nbsp;&nbsp;&nbsp;&nbsp;</span><span style="COLOR: #0000ff">int</span><span style="COLOR: #000000">&nbsp;t[</span><span style="COLOR: #000000">9</span><span style="COLOR: #000000">],&nbsp;a,&nbsp;b;<br>&nbsp;&nbsp;&nbsp;&nbsp;</span><span style="COLOR: #0000ff">int</span><span style="COLOR: #000000">&nbsp;total&nbsp;</span><span style="COLOR: #000000">=</span><span style="COLOR: #000000">&nbsp;</span><span style="COLOR: #000000">40</span><span style="COLOR: #000000">;<br><br>&nbsp;&nbsp;&nbsp;&nbsp;scanf(</span><span style="COLOR: #000000">"</span><span style="COLOR: #000000">%d</span><span style="COLOR: #000000">"</span><span style="COLOR: #000000">,&nbsp;</span><span style="COLOR: #000000">&amp;</span><span style="COLOR: #000000">k);<br>&nbsp;&nbsp;&nbsp;&nbsp;</span><span style="COLOR: #0000ff">while</span><span style="COLOR: #000000">&nbsp;(k</span><span style="COLOR: #000000">--</span><span style="COLOR: #000000">&nbsp;</span><span style="COLOR: #000000">&amp;&amp;</span><span style="COLOR: #000000">&nbsp;scanf(</span><span style="COLOR: #000000">"</span><span style="COLOR: #000000">%d%d</span><span style="COLOR: #000000">"</span><span style="COLOR: #000000">,&nbsp;</span><span style="COLOR: #000000">&amp;</span><span style="COLOR: #000000">total,&nbsp;</span><span style="COLOR: #000000">&amp;</span><span style="COLOR: #000000">n))<br>&nbsp;&nbsp;&nbsp;&nbsp;{<br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;</span><span style="COLOR: #0000ff">for</span><span style="COLOR: #000000">&nbsp;(count&nbsp;</span><span style="COLOR: #000000">=</span><span style="COLOR: #000000">&nbsp;i&nbsp;</span><span style="COLOR: #000000">=</span><span style="COLOR: #000000">&nbsp;</span><span style="COLOR: #000000">0</span><span style="COLOR: #000000">;&nbsp;i&nbsp;</span><span style="COLOR: #000000">&lt;</span><span style="COLOR: #000000">&nbsp;</span><span style="COLOR: #000000">9</span><span style="COLOR: #000000">;&nbsp;t[i</span><span style="COLOR: #000000">++</span><span style="COLOR: #000000">]&nbsp;</span><span style="COLOR: #000000">=</span><span style="COLOR: #000000">&nbsp;</span><span style="COLOR: #000000">0</span><span style="COLOR: #000000">);<br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;</span><span style="COLOR: #0000ff">for</span><span style="COLOR: #000000">&nbsp;(i&nbsp;</span><span style="COLOR: #000000">=</span><span style="COLOR: #000000">&nbsp;</span><span style="COLOR: #000000">0</span><span style="COLOR: #000000">;&nbsp;i&nbsp;</span><span style="COLOR: #000000">&lt;</span><span style="COLOR: #000000">&nbsp;n;&nbsp;i</span><span style="COLOR: #000000">++</span><span style="COLOR: #000000">)<br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;{<br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;scanf(</span><span style="COLOR: #000000">"</span><span style="COLOR: #000000">%d%d</span><span style="COLOR: #000000">"</span><span style="COLOR: #000000">,&nbsp;</span><span style="COLOR: #000000">&amp;</span><span style="COLOR: #000000">a,&nbsp;</span><span style="COLOR: #000000">&amp;</span><span style="COLOR: #000000">b);<br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;t[a]&nbsp;</span><span style="COLOR: #000000">=</span><span style="COLOR: #000000">&nbsp;b;<br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;}<br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;</span><span style="COLOR: #0000ff">for</span><span style="COLOR: #000000">&nbsp;(c[</span><span style="COLOR: #000000">8</span><span style="COLOR: #000000">]&nbsp;</span><span style="COLOR: #000000">=</span><span style="COLOR: #000000">&nbsp;</span><span style="COLOR: #000000">0</span><span style="COLOR: #000000">;&nbsp;c[</span><span style="COLOR: #000000">8</span><span style="COLOR: #000000">]&nbsp;</span><span style="COLOR: #000000">&lt;=</span><span style="COLOR: #000000">&nbsp;t[</span><span style="COLOR: #000000">8</span><span style="COLOR: #000000">]&nbsp;</span><span style="COLOR: #000000">&amp;&amp;</span><span style="COLOR: #000000">&nbsp;c[</span><span style="COLOR: #000000">8</span><span style="COLOR: #000000">]&nbsp;</span><span style="COLOR: #000000">*</span><span style="COLOR: #000000">&nbsp;</span><span style="COLOR: #000000">8</span><span style="COLOR: #000000">&nbsp;</span><span style="COLOR: #000000">&lt;=</span><span style="COLOR: #000000">&nbsp;total;&nbsp;c[</span><span style="COLOR: #000000">8</span><span style="COLOR: #000000">]</span><span style="COLOR: #000000">++</span><span style="COLOR: #000000">)<br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;</span><span style="COLOR: #0000ff">for</span><span style="COLOR: #000000">&nbsp;(c[</span><span style="COLOR: #000000">7</span><span style="COLOR: #000000">]&nbsp;</span><span style="COLOR: #000000">=</span><span style="COLOR: #000000">&nbsp;</span><span style="COLOR: #000000">0</span><span style="COLOR: #000000">;&nbsp;c[</span><span style="COLOR: #000000">7</span><span style="COLOR: #000000">]&nbsp;</span><span style="COLOR: #000000">&lt;=</span><span style="COLOR: #000000">&nbsp;t[</span><span style="COLOR: #000000">7</span><span style="COLOR: #000000">]&nbsp;</span><span style="COLOR: #000000">&amp;&amp;</span><span style="COLOR: #000000">&nbsp;c[</span><span style="COLOR: #000000">8</span><span style="COLOR: #000000">]&nbsp;</span><span style="COLOR: #000000">*</span><span style="COLOR: #000000">&nbsp;</span><span style="COLOR: #000000">8</span><span style="COLOR: #000000">&nbsp;</span><span style="COLOR: #000000">+</span><span style="COLOR: #000000">&nbsp;c[</span><span style="COLOR: #000000">7</span><span style="COLOR: #000000">]&nbsp;</span><span style="COLOR: #000000">*</span><span style="COLOR: #000000">&nbsp;</span><span style="COLOR: #000000">7</span><span style="COLOR: #000000">&nbsp;</span><span style="COLOR: #000000">&lt;=</span><span style="COLOR: #000000">&nbsp;total;&nbsp;c[</span><span style="COLOR: #000000">7</span><span style="COLOR: #000000">]</span><span style="COLOR: #000000">++</span><span style="COLOR: #000000">)<br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;</span><span style="COLOR: #0000ff">for</span><span style="COLOR: #000000">&nbsp;(c[</span><span style="COLOR: #000000">6</span><span style="COLOR: #000000">]&nbsp;</span><span style="COLOR: #000000">=</span><span style="COLOR: #000000">&nbsp;</span><span style="COLOR: #000000">0</span><span style="COLOR: #000000">;&nbsp;c[</span><span style="COLOR: #000000">6</span><span style="COLOR: #000000">]&nbsp;</span><span style="COLOR: #000000">&lt;=</span><span style="COLOR: #000000">&nbsp;t[</span><span style="COLOR: #000000">6</span><span style="COLOR: #000000">]&nbsp;</span><span style="COLOR: #000000">&amp;&amp;</span><span style="COLOR: #000000">&nbsp;c[</span><span style="COLOR: #000000">8</span><span style="COLOR: #000000">]&nbsp;</span><span style="COLOR: #000000">*</span><span style="COLOR: #000000">&nbsp;</span><span style="COLOR: #000000">8</span><span style="COLOR: #000000">&nbsp;</span><span style="COLOR: #000000">+</span><span style="COLOR: #000000">&nbsp;c[</span><span style="COLOR: #000000">7</span><span style="COLOR: #000000">]&nbsp;</span><span style="COLOR: #000000">*</span><span style="COLOR: #000000">&nbsp;</span><span style="COLOR: #000000">7</span><span style="COLOR: #000000">&nbsp;</span><span style="COLOR: #000000">+</span><span style="COLOR: #000000">&nbsp;c[</span><span style="COLOR: #000000">6</span><span style="COLOR: #000000">]&nbsp;</span><span style="COLOR: #000000">*</span><span style="COLOR: #000000">&nbsp;</span><span style="COLOR: #000000">6</span><span style="COLOR: #000000">&nbsp;</span><span style="COLOR: #000000">&lt;=</span><span style="COLOR: #000000">&nbsp;total;&nbsp;c[</span><span style="COLOR: #000000">6</span><span style="COLOR: #000000">]</span><span style="COLOR: #000000">++</span><span style="COLOR: #000000">)<br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;</span><span style="COLOR: #0000ff">for</span><span style="COLOR: #000000">&nbsp;(c[</span><span style="COLOR: #000000">5</span><span style="COLOR: #000000">]&nbsp;</span><span style="COLOR: #000000">=</span><span style="COLOR: #000000">&nbsp;</span><span style="COLOR: #000000">0</span><span style="COLOR: #000000">;&nbsp;c[</span><span style="COLOR: #000000">5</span><span style="COLOR: #000000">]&nbsp;</span><span style="COLOR: #000000">&lt;=</span><span style="COLOR: #000000">&nbsp;t[</span><span style="COLOR: #000000">5</span><span style="COLOR: #000000">]&nbsp;</span><span style="COLOR: #000000">&amp;&amp;</span><span style="COLOR: #000000">&nbsp;c[</span><span style="COLOR: #000000">8</span><span style="COLOR: #000000">]&nbsp;</span><span style="COLOR: #000000">*</span><span style="COLOR: #000000">&nbsp;</span><span style="COLOR: #000000">8</span><span style="COLOR: #000000">&nbsp;</span><span style="COLOR: #000000">+</span><span style="COLOR: #000000">&nbsp;c[</span><span style="COLOR: #000000">7</span><span style="COLOR: #000000">]&nbsp;</span><span style="COLOR: #000000">*</span><span style="COLOR: #000000">&nbsp;</span><span style="COLOR: #000000">7</span><span style="COLOR: #000000">&nbsp;</span><span style="COLOR: #000000">+</span><span style="COLOR: #000000">&nbsp;c[</span><span style="COLOR: #000000">6</span><span style="COLOR: #000000">]&nbsp;</span><span style="COLOR: #000000">*</span><span style="COLOR: #000000">&nbsp;</span><span style="COLOR: #000000">6</span><span style="COLOR: #000000">&nbsp;</span><span style="COLOR: #000000">+</span><span style="COLOR: #000000">&nbsp;c[</span><span style="COLOR: #000000">5</span><span style="COLOR: #000000">]&nbsp;</span><span style="COLOR: #000000">*</span><span style="COLOR: #000000">&nbsp;</span><span style="COLOR: #000000">5</span><span style="COLOR: #000000">&nbsp;</span><span style="COLOR: #000000">&lt;=</span><span style="COLOR: #000000">&nbsp;total;&nbsp;c[</span><span style="COLOR: #000000">5</span><span style="COLOR: #000000">]</span><span style="COLOR: #000000">++</span><span style="COLOR: #000000">)<br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;</span><span style="COLOR: #0000ff">for</span><span style="COLOR: #000000">&nbsp;(c[</span><span style="COLOR: #000000">4</span><span style="COLOR: #000000">]&nbsp;</span><span style="COLOR: #000000">=</span><span style="COLOR: #000000">&nbsp;</span><span style="COLOR: #000000">0</span><span style="COLOR: #000000">;&nbsp;c[</span><span style="COLOR: #000000">4</span><span style="COLOR: #000000">]&nbsp;</span><span style="COLOR: #000000">&lt;=</span><span style="COLOR: #000000">&nbsp;t[</span><span style="COLOR: #000000">4</span><span style="COLOR: #000000">]&nbsp;</span><span style="COLOR: #000000">&amp;&amp;</span><span style="COLOR: #000000">&nbsp;c[</span><span style="COLOR: #000000">8</span><span style="COLOR: #000000">]&nbsp;</span><span style="COLOR: #000000">*</span><span style="COLOR: #000000">&nbsp;</span><span style="COLOR: #000000">8</span><span style="COLOR: #000000">&nbsp;</span><span style="COLOR: #000000">+</span><span style="COLOR: #000000">&nbsp;c[</span><span style="COLOR: #000000">7</span><span style="COLOR: #000000">]&nbsp;</span><span style="COLOR: #000000">*</span><span style="COLOR: #000000">&nbsp;</span><span style="COLOR: #000000">7</span><span style="COLOR: #000000">&nbsp;</span><span style="COLOR: #000000">+</span><span style="COLOR: #000000">&nbsp;c[</span><span style="COLOR: #000000">6</span><span style="COLOR: #000000">]&nbsp;</span><span style="COLOR: #000000">*</span><span style="COLOR: #000000">&nbsp;</span><span style="COLOR: #000000">6</span><span style="COLOR: #000000">&nbsp;</span><span style="COLOR: #000000">+</span><span style="COLOR: #000000">&nbsp;c[</span><span style="COLOR: #000000">5</span><span style="COLOR: #000000">]&nbsp;</span><span style="COLOR: #000000">*</span><span style="COLOR: #000000">&nbsp;</span><span style="COLOR: #000000">5</span><span style="COLOR: #000000">&nbsp;&nbsp;</span><span style="COLOR: #000000">+</span><span style="COLOR: #000000">&nbsp;c[</span><span style="COLOR: #000000">4</span><span style="COLOR: #000000">]&nbsp;</span><span style="COLOR: #000000">*</span><span style="COLOR: #000000">&nbsp;</span><span style="COLOR: #000000">4</span><span style="COLOR: #000000">&nbsp;</span><span style="COLOR: #000000">&lt;=</span><span style="COLOR: #000000">&nbsp;total;&nbsp;c[</span><span style="COLOR: #000000">4</span><span style="COLOR: #000000">]</span><span style="COLOR: #000000">++</span><span style="COLOR: #000000">)<br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;</span><span style="COLOR: #0000ff">for</span><span style="COLOR: #000000">&nbsp;(c[</span><span style="COLOR: #000000">3</span><span style="COLOR: #000000">]&nbsp;</span><span style="COLOR: #000000">=</span><span style="COLOR: #000000">&nbsp;</span><span style="COLOR: #000000">0</span><span style="COLOR: #000000">;&nbsp;c[</span><span style="COLOR: #000000">3</span><span style="COLOR: #000000">]&nbsp;</span><span style="COLOR: #000000">&lt;=</span><span style="COLOR: #000000">&nbsp;t[</span><span style="COLOR: #000000">3</span><span style="COLOR: #000000">]&nbsp;</span><span style="COLOR: #000000">&amp;&amp;</span><span style="COLOR: #000000">&nbsp;c[</span><span style="COLOR: #000000">8</span><span style="COLOR: #000000">]&nbsp;</span><span style="COLOR: #000000">*</span><span style="COLOR: #000000">&nbsp;</span><span style="COLOR: #000000">8</span><span style="COLOR: #000000">&nbsp;</span><span style="COLOR: #000000">+</span><span style="COLOR: #000000">&nbsp;c[</span><span style="COLOR: #000000">7</span><span style="COLOR: #000000">]&nbsp;</span><span style="COLOR: #000000">*</span><span style="COLOR: #000000">&nbsp;</span><span style="COLOR: #000000">7</span><span style="COLOR: #000000">&nbsp;</span><span style="COLOR: #000000">+</span><span style="COLOR: #000000">&nbsp;c[</span><span style="COLOR: #000000">6</span><span style="COLOR: #000000">]&nbsp;</span><span style="COLOR: #000000">*</span><span style="COLOR: #000000">&nbsp;</span><span style="COLOR: #000000">6</span><span style="COLOR: #000000">&nbsp;</span><span style="COLOR: #000000">+</span><span style="COLOR: #000000">&nbsp;c[</span><span style="COLOR: #000000">5</span><span style="COLOR: #000000">]&nbsp;</span><span style="COLOR: #000000">*</span><span style="COLOR: #000000">&nbsp;</span><span style="COLOR: #000000">5</span><span style="COLOR: #000000">&nbsp;&nbsp;</span><span style="COLOR: #000000">+</span><span style="COLOR: #000000">&nbsp;c[</span><span style="COLOR: #000000">4</span><span style="COLOR: #000000">]&nbsp;</span><span style="COLOR: #000000">*</span><span style="COLOR: #000000">&nbsp;</span><span style="COLOR: #000000">4</span><span style="COLOR: #000000">&nbsp;&nbsp;</span><span style="COLOR: #000000">+</span><span style="COLOR: #000000">&nbsp;c[</span><span style="COLOR: #000000">3</span><span style="COLOR: #000000">]&nbsp;</span><span style="COLOR: #000000">*</span><span style="COLOR: #000000">&nbsp;</span><span style="COLOR: #000000">3</span><span style="COLOR: #000000">&nbsp;</span><span style="COLOR: #000000">&lt;=</span><span style="COLOR: #000000">&nbsp;total;&nbsp;c[</span><span style="COLOR: #000000">3</span><span style="COLOR: #000000">]</span><span style="COLOR: #000000">++</span><span style="COLOR: #000000">)<br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;</span><span style="COLOR: #0000ff">for</span><span style="COLOR: #000000">&nbsp;(c[</span><span style="COLOR: #000000">2</span><span style="COLOR: #000000">]&nbsp;</span><span style="COLOR: #000000">=</span><span style="COLOR: #000000">&nbsp;</span><span style="COLOR: #000000">0</span><span style="COLOR: #000000">;&nbsp;c[</span><span style="COLOR: #000000">2</span><span style="COLOR: #000000">]&nbsp;</span><span style="COLOR: #000000">&lt;=</span><span style="COLOR: #000000">&nbsp;t[</span><span style="COLOR: #000000">2</span><span style="COLOR: #000000">]&nbsp;</span><span style="COLOR: #000000">&amp;&amp;</span><span style="COLOR: #000000">&nbsp;c[</span><span style="COLOR: #000000">8</span><span style="COLOR: #000000">]&nbsp;</span><span style="COLOR: #000000">*</span><span style="COLOR: #000000">&nbsp;</span><span style="COLOR: #000000">8</span><span style="COLOR: #000000">&nbsp;</span><span style="COLOR: #000000">+</span><span style="COLOR: #000000">&nbsp;c[</span><span style="COLOR: #000000">7</span><span style="COLOR: #000000">]&nbsp;</span><span style="COLOR: #000000">*</span><span style="COLOR: #000000">&nbsp;</span><span style="COLOR: #000000">7</span><span style="COLOR: #000000">&nbsp;</span><span style="COLOR: #000000">+</span><span style="COLOR: #000000">&nbsp;c[</span><span style="COLOR: #000000">6</span><span style="COLOR: #000000">]&nbsp;</span><span style="COLOR: #000000">*</span><span style="COLOR: #000000">&nbsp;</span><span style="COLOR: #000000">6</span><span style="COLOR: #000000">&nbsp;</span><span style="COLOR: #000000">+</span><span style="COLOR: #000000">&nbsp;c[</span><span style="COLOR: #000000">5</span><span style="COLOR: #000000">]&nbsp;</span><span style="COLOR: #000000">*</span><span style="COLOR: #000000">&nbsp;</span><span style="COLOR: #000000">5</span><span style="COLOR: #000000">&nbsp;&nbsp;</span><span style="COLOR: #000000">+</span><span style="COLOR: #000000">&nbsp;c[</span><span style="COLOR: #000000">4</span><span style="COLOR: #000000">]&nbsp;</span><span style="COLOR: #000000">*</span><span style="COLOR: #000000">&nbsp;</span><span style="COLOR: #000000">4</span><span style="COLOR: #000000">&nbsp;&nbsp;</span><span style="COLOR: #000000">+</span><span style="COLOR: #000000">&nbsp;c[</span><span style="COLOR: #000000">3</span><span style="COLOR: #000000">]&nbsp;</span><span style="COLOR: #000000">*</span><span style="COLOR: #000000">&nbsp;</span><span style="COLOR: #000000">3</span><span style="COLOR: #000000">&nbsp;&nbsp;</span><span style="COLOR: #000000">+</span><span style="COLOR: #000000">&nbsp;c[</span><span style="COLOR: #000000">2</span><span style="COLOR: #000000">]&nbsp;</span><span style="COLOR: #000000">*</span><span style="COLOR: #000000">&nbsp;</span><span style="COLOR: #000000">2</span><span style="COLOR: #000000">&nbsp;</span><span style="COLOR: #000000">&lt;=</span><span style="COLOR: #000000">&nbsp;total;&nbsp;c[</span><span style="COLOR: #000000">2</span><span style="COLOR: #000000">]</span><span style="COLOR: #000000">++</span><span style="COLOR: #000000">)<br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;{<br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;c[</span><span style="COLOR: #000000">1</span><span style="COLOR: #000000">]&nbsp;</span><span style="COLOR: #000000">=</span><span style="COLOR: #000000">&nbsp;total&nbsp;</span><span style="COLOR: #000000">-</span><span style="COLOR: #000000">&nbsp;(c[</span><span style="COLOR: #000000">8</span><span style="COLOR: #000000">]&nbsp;</span><span style="COLOR: #000000">*</span><span style="COLOR: #000000">&nbsp;</span><span style="COLOR: #000000">8</span><span style="COLOR: #000000">&nbsp;</span><span style="COLOR: #000000">+</span><span style="COLOR: #000000">&nbsp;c[</span><span style="COLOR: #000000">7</span><span style="COLOR: #000000">]&nbsp;</span><span style="COLOR: #000000">*</span><span style="COLOR: #000000">&nbsp;</span><span style="COLOR: #000000">7</span><span style="COLOR: #000000">&nbsp;</span><span style="COLOR: #000000">+</span><span style="COLOR: #000000">&nbsp;c[</span><span style="COLOR: #000000">6</span><span style="COLOR: #000000">]&nbsp;</span><span style="COLOR: #000000">*</span><span style="COLOR: #000000">&nbsp;</span><span style="COLOR: #000000">6</span><span style="COLOR: #000000">&nbsp;</span><span style="COLOR: #000000">+</span><span style="COLOR: #000000">&nbsp;c[</span><span style="COLOR: #000000">5</span><span style="COLOR: #000000">]&nbsp;</span><span style="COLOR: #000000">*</span><span style="COLOR: #000000">&nbsp;</span><span style="COLOR: #000000">5</span><span style="COLOR: #000000">&nbsp;&nbsp;</span><span style="COLOR: #000000">+</span><span style="COLOR: #000000">&nbsp;c[</span><span style="COLOR: #000000">4</span><span style="COLOR: #000000">]&nbsp;</span><span style="COLOR: #000000">*</span><span style="COLOR: #000000">&nbsp;</span><span style="COLOR: #000000">4</span><span style="COLOR: #000000">&nbsp;&nbsp;</span><span style="COLOR: #000000">+</span><span style="COLOR: #000000">&nbsp;c[</span><span style="COLOR: #000000">3</span><span style="COLOR: #000000">]&nbsp;</span><span style="COLOR: #000000">*</span><span style="COLOR: #000000">&nbsp;</span><span style="COLOR: #000000">3</span><span style="COLOR: #000000">&nbsp;&nbsp;</span><span style="COLOR: #000000">+</span><span style="COLOR: #000000">&nbsp;c[</span><span style="COLOR: #000000">2</span><span style="COLOR: #000000">]&nbsp;</span><span style="COLOR: #000000">*</span><span style="COLOR: #000000">&nbsp;</span><span style="COLOR: #000000">2</span><span style="COLOR: #000000">);<br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;</span><span style="COLOR: #0000ff">if</span><span style="COLOR: #000000">&nbsp;(c[</span><span style="COLOR: #000000">1</span><span style="COLOR: #000000">]&nbsp;</span><span style="COLOR: #000000">&gt;=</span><span style="COLOR: #000000">&nbsp;</span><span style="COLOR: #000000">0</span><span style="COLOR: #000000">&nbsp;</span><span style="COLOR: #000000">&amp;&amp;</span><span style="COLOR: #000000">&nbsp;c[</span><span style="COLOR: #000000">1</span><span style="COLOR: #000000">]&nbsp;</span><span style="COLOR: #000000">&lt;=</span><span style="COLOR: #000000">&nbsp;t[</span><span style="COLOR: #000000">1</span><span style="COLOR: #000000">])&nbsp;count</span><span style="COLOR: #000000">++</span><span style="COLOR: #000000">;<br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;}<br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;printf(</span><span style="COLOR: #000000">"</span><span style="COLOR: #000000">%d\n</span><span style="COLOR: #000000">"</span><span style="COLOR: #000000">,&nbsp;count);<br>&nbsp;&nbsp;&nbsp;&nbsp;}<br>&nbsp;&nbsp;&nbsp;&nbsp;<br><br>&nbsp;&nbsp;&nbsp;&nbsp;</span><span style="COLOR: #0000ff">return</span><span style="COLOR: #000000">&nbsp;</span><span style="COLOR: #000000">0</span><span style="COLOR: #000000">;<br>}<br></span></div>
<img src ="http://www.cppblog.com/MiYu/aggbug/122407.html" width = "1" height = "1" /><br><br><div align=right><a style="text-decoration:none;" href="http://www.cppblog.com/MiYu/" target="_blank">MiYu</a> 2010-08-06 10:14 <a href="http://www.cppblog.com/MiYu/archive/2010/08/06/122407.html#Feedback" target="_blank" style="text-decoration:none;">发表评论</a></div>]]></description></item><item><title>HDOJ HDU 1164 Eddy's research I ACM 1164 IN HDU </title><link>http://www.cppblog.com/MiYu/archive/2010/08/06/122398.html</link><dc:creator>MiYu</dc:creator><author>MiYu</author><pubDate>Fri, 06 Aug 2010 01:18:00 GMT</pubDate><guid>http://www.cppblog.com/MiYu/archive/2010/08/06/122398.html</guid><wfw:comment>http://www.cppblog.com/MiYu/comments/122398.html</wfw:comment><comments>http://www.cppblog.com/MiYu/archive/2010/08/06/122398.html#Feedback</comments><slash:comments>0</slash:comments><wfw:commentRss>http://www.cppblog.com/MiYu/comments/commentRss/122398.html</wfw:commentRss><trackback:ping>http://www.cppblog.com/MiYu/services/trackbacks/122398.html</trackback:ping><description><![CDATA[<span style="COLOR: #000000">//MiYu原创, 转帖请注明 : 转载自 <a href="http://www.cppblog.com/MiYu/">______________白白の屋</a></span><br><br>题目地址:<br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;<a href="http://acm.hdu.edu.cn/showproblem.php?pid=1164">http://acm.hdu.edu.cn/showproblem.php?pid=1164</a><br>题目描述:<br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;把一个数拆分成素数的乘积.<br><br>素数的水题 ,&nbsp; 只要把素数提取出来, 暴力就可以了.<br>代码如下 :<br>
<div style="BORDER-BOTTOM: #cccccc 1px solid; BORDER-LEFT: #cccccc 1px solid; PADDING-BOTTOM: 4px; BACKGROUND-COLOR: #eeeeee; PADDING-LEFT: 4px; WIDTH: 98%; PADDING-RIGHT: 5px; FONT-SIZE: 13px; WORD-BREAK: break-all; BORDER-TOP: #cccccc 1px solid; BORDER-RIGHT: #cccccc 1px solid; PADDING-TOP: 4px"><span style="COLOR: #000000"><span style="COLOR: #000000">//MiYu原创, 转帖请注明 : 转载自 <a href="http://www.cppblog.com/MiYu/">______________白白の屋</a></span><br><br>#include&nbsp;</span><span style="COLOR: #000000">&lt;</span><span style="COLOR: #000000">iostream</span><span style="COLOR: #000000">&gt;</span><span style="COLOR: #000000"><br></span><span style="COLOR: #0000ff">using</span><span style="COLOR: #000000">&nbsp;</span><span style="COLOR: #0000ff">namespace</span><span style="COLOR: #000000">&nbsp;std;<br></span><span style="COLOR: #0000ff">int</span><span style="COLOR: #000000">&nbsp;num[</span><span style="COLOR: #000000">70001</span><span style="COLOR: #000000">];<br></span><span style="COLOR: #0000ff">int</span><span style="COLOR: #000000">&nbsp;main&nbsp;()<br>{<br>&nbsp;&nbsp;&nbsp;&nbsp;</span><span style="COLOR: #0000ff">for</span><span style="COLOR: #000000">&nbsp;(&nbsp;</span><span style="COLOR: #0000ff">int</span><span style="COLOR: #000000">&nbsp;i&nbsp;</span><span style="COLOR: #000000">=</span><span style="COLOR: #000000">&nbsp;</span><span style="COLOR: #000000">2</span><span style="COLOR: #000000">;&nbsp;i&nbsp;</span><span style="COLOR: #000000">&lt;=</span><span style="COLOR: #000000">&nbsp;</span><span style="COLOR: #000000">70000</span><span style="COLOR: #000000">;&nbsp;</span><span style="COLOR: #000000">++</span><span style="COLOR: #000000">&nbsp;i&nbsp;)<br>&nbsp;&nbsp;&nbsp;&nbsp;{<br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;</span><span style="COLOR: #0000ff">if</span><span style="COLOR: #000000">&nbsp;(&nbsp;</span><span style="COLOR: #000000">!</span><span style="COLOR: #000000">num[i]&nbsp;)<br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;</span><span style="COLOR: #0000ff">for</span><span style="COLOR: #000000">&nbsp;(&nbsp;</span><span style="COLOR: #0000ff">int</span><span style="COLOR: #000000">&nbsp;j&nbsp;</span><span style="COLOR: #000000">=</span><span style="COLOR: #000000">&nbsp;</span><span style="COLOR: #000000">2</span><span style="COLOR: #000000">;&nbsp;i&nbsp;</span><span style="COLOR: #000000">*</span><span style="COLOR: #000000">&nbsp;j&nbsp;</span><span style="COLOR: #000000">&lt;=</span><span style="COLOR: #000000">&nbsp;</span><span style="COLOR: #000000">70000</span><span style="COLOR: #000000">;&nbsp;</span><span style="COLOR: #000000">++</span><span style="COLOR: #000000">&nbsp;j&nbsp;)<br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;{<br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;num[i</span><span style="COLOR: #000000">*</span><span style="COLOR: #000000">j]&nbsp;</span><span style="COLOR: #000000">=</span><span style="COLOR: #000000">&nbsp;</span><span style="COLOR: #000000">1</span><span style="COLOR: #000000">;&nbsp;<br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;}&nbsp;<br>&nbsp;&nbsp;&nbsp;&nbsp;}<br>&nbsp;&nbsp;&nbsp;&nbsp;</span><span style="COLOR: #0000ff">int</span><span style="COLOR: #000000">&nbsp;N;<br>&nbsp;&nbsp;&nbsp;&nbsp;</span><span style="COLOR: #0000ff">while</span><span style="COLOR: #000000">&nbsp;(&nbsp;cin&nbsp;</span><span style="COLOR: #000000">&gt;&gt;</span><span style="COLOR: #000000">&nbsp;N&nbsp;)<br>&nbsp;&nbsp;&nbsp;&nbsp;{<br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;</span><span style="COLOR: #0000ff">int</span><span style="COLOR: #000000">&nbsp;n&nbsp;</span><span style="COLOR: #000000">=</span><span style="COLOR: #000000">&nbsp;N;<br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;</span><span style="COLOR: #0000ff">int</span><span style="COLOR: #000000">&nbsp;f&nbsp;</span><span style="COLOR: #000000">=</span><span style="COLOR: #000000">&nbsp;</span><span style="COLOR: #000000">1</span><span style="COLOR: #000000">;<br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;</span><span style="COLOR: #0000ff">while</span><span style="COLOR: #000000">&nbsp;(&nbsp;n&nbsp;</span><span style="COLOR: #000000">!=</span><span style="COLOR: #000000">&nbsp;</span><span style="COLOR: #000000">1</span><span style="COLOR: #000000">&nbsp;)<br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;{&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;<br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;</span><span style="COLOR: #0000ff">int</span><span style="COLOR: #000000">&nbsp;i&nbsp;</span><span style="COLOR: #000000">=</span><span style="COLOR: #000000">&nbsp;</span><span style="COLOR: #000000">2</span><span style="COLOR: #000000">;<br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;</span><span style="COLOR: #0000ff">for</span><span style="COLOR: #000000">&nbsp;(&nbsp;;&nbsp;i&nbsp;</span><span style="COLOR: #000000">&lt;=</span><span style="COLOR: #000000">&nbsp;</span><span style="COLOR: #000000">65535</span><span style="COLOR: #000000">;&nbsp;</span><span style="COLOR: #000000">++</span><span style="COLOR: #000000">&nbsp;i&nbsp;)<br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;{<br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;</span><span style="COLOR: #0000ff">if</span><span style="COLOR: #000000">&nbsp;(&nbsp;</span><span style="COLOR: #000000">!</span><span style="COLOR: #000000">num[i]&nbsp;</span><span style="COLOR: #000000">&amp;&amp;</span><span style="COLOR: #000000">&nbsp;n&nbsp;</span><span style="COLOR: #000000">%</span><span style="COLOR: #000000">&nbsp;i&nbsp;</span><span style="COLOR: #000000">==</span><span style="COLOR: #000000">&nbsp;</span><span style="COLOR: #000000">0</span><span style="COLOR: #000000">&nbsp;)<br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;{<br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;</span><span style="COLOR: #0000ff">if</span><span style="COLOR: #000000">&nbsp;(&nbsp;f&nbsp;)<br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;{<br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;cout&nbsp;</span><span style="COLOR: #000000">&lt;&lt;</span><span style="COLOR: #000000">&nbsp;i;&nbsp;<br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;f&nbsp;</span><span style="COLOR: #000000">=</span><span style="COLOR: #000000">&nbsp;</span><span style="COLOR: #000000">0</span><span style="COLOR: #000000">;<br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;}<br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;</span><span style="COLOR: #0000ff">else</span><span style="COLOR: #000000"><br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;{<br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;cout&nbsp;</span><span style="COLOR: #000000">&lt;&lt;</span><span style="COLOR: #000000">&nbsp;</span><span style="COLOR: #000000">"</span><span style="COLOR: #000000">*</span><span style="COLOR: #000000">"</span><span style="COLOR: #000000">&nbsp;</span><span style="COLOR: #000000">&lt;&lt;</span><span style="COLOR: #000000">&nbsp;i;&nbsp;<br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;}<br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;</span><span style="COLOR: #0000ff">break</span><span style="COLOR: #000000">;<br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;}&nbsp;<br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;}&nbsp;<br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;n&nbsp;</span><span style="COLOR: #000000">/=</span><span style="COLOR: #000000">&nbsp;i;<br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;}&nbsp;<br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;cout&nbsp;</span><span style="COLOR: #000000">&lt;&lt;</span><span style="COLOR: #000000">&nbsp;endl;<br>&nbsp;&nbsp;&nbsp;&nbsp;}<br></span><span style="COLOR: #008000">//</span><span style="COLOR: #008000">&nbsp;&nbsp;&nbsp;&nbsp;getchar();</span><span style="COLOR: #008000"><br></span><span style="COLOR: #000000">&nbsp;&nbsp;&nbsp;&nbsp;</span><span style="COLOR: #0000ff">return</span><span style="COLOR: #000000">&nbsp;</span><span style="COLOR: #000000">0</span><span style="COLOR: #000000">;&nbsp;<br>}<br></span></div>
<img src ="http://www.cppblog.com/MiYu/aggbug/122398.html" width = "1" height = "1" /><br><br><div align=right><a style="text-decoration:none;" href="http://www.cppblog.com/MiYu/" target="_blank">MiYu</a> 2010-08-06 09:18 <a href="http://www.cppblog.com/MiYu/archive/2010/08/06/122398.html#Feedback" target="_blank" style="text-decoration:none;">发表评论</a></div>]]></description></item><item><title>HDOJ HDU 2069 Coin Change ACM 2069 IN HDU ..WA 真的成为习惯了...................</title><link>http://www.cppblog.com/MiYu/archive/2010/08/03/122120.html</link><dc:creator>MiYu</dc:creator><author>MiYu</author><pubDate>Tue, 03 Aug 2010 14:49:00 GMT</pubDate><guid>http://www.cppblog.com/MiYu/archive/2010/08/03/122120.html</guid><wfw:comment>http://www.cppblog.com/MiYu/comments/122120.html</wfw:comment><comments>http://www.cppblog.com/MiYu/archive/2010/08/03/122120.html#Feedback</comments><slash:comments>0</slash:comments><wfw:commentRss>http://www.cppblog.com/MiYu/comments/commentRss/122120.html</wfw:commentRss><trackback:ping>http://www.cppblog.com/MiYu/services/trackbacks/122120.html</trackback:ping><description><![CDATA[<span style="WIDOWS: 2; TEXT-TRANSFORM: none; TEXT-INDENT: 0px; BORDER-COLLAPSE: separate; FONT: medium 'Times New Roman'; WHITE-SPACE: normal; ORPHANS: 2; LETTER-SPACING: normal; COLOR: rgb(0,0,0); WORD-SPACING: 0px; -webkit-border-horizontal-spacing: 0px; -webkit-border-vertical-spacing: 0px; -webkit-text-decorations-in-effect: none; -webkit-text-size-adjust: auto; -webkit-text-stroke-width: 0px" class=Apple-style-span><span style="TEXT-ALIGN: left; BORDER-COLLAPSE: collapse; FONT-FAMILY: Impact; COLOR: rgb(68,68,68); FONT-SIZE: 14px" class=Apple-style-span><span style="COLOR: #000000"><font size=3>//MiYu原创, 转帖请注明 : 转载自 </font><a href="http://www.cppblog.com/MiYu/"><font size=3>______________白白の屋</font></a></span><br><br>题目地址 :<br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;<a href="http://acm.hdu.edu.cn/showproblem.php?pid=2069">http://acm.hdu.edu.cn/showproblem.php?pid=2069</a><br><br>目前每日平均WA次数 20次以上...................................<br style="LINE-HEIGHT: normal; WORD-WRAP: break-word">晚上做一道水题 HDOJ 2069 ACM IN HDU, 又跟上次的 TLE 的 -1 一样, 题目的最后一段是文件结束的说明,<br style="LINE-HEIGHT: normal; WORD-WRAP: break-word">都没怎么自习去看, 结果直接就WA了.............最后在 元帅的提醒下, 原来这题真的很水,就跟刚学编程时做的<br style="LINE-HEIGHT: normal; WORD-WRAP: break-word">100钱买小鸡,公鸡,母鸡 100只一样, 是可以直接暴力的, 因为数据不大.&nbsp; 当然,也可以用 母函数来做, 不过需要<br>增开辅助空间 :&nbsp;<br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; c1<span style="COLOR: #008000">[i][j]&nbsp; 表示i分钱由j个硬币组成的方案数 , 然后在循环中增加一个循环 :用于保存在当前硬币数量k上增加<br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;1 - n 个硬币时 (&nbsp;k +&nbsp;n &lt; =100&nbsp; )&nbsp;&nbsp;&nbsp;方案数</span><br>暴力代码: <br>
<div style="BORDER-BOTTOM: #cccccc 1px solid; BORDER-LEFT: #cccccc 1px solid; PADDING-BOTTOM: 4px; BACKGROUND-COLOR: #eeeeee; PADDING-LEFT: 4px; WIDTH: 98%; PADDING-RIGHT: 5px; FONT-SIZE: 13px; WORD-BREAK: break-all; BORDER-TOP: #cccccc 1px solid; BORDER-RIGHT: #cccccc 1px solid; PADDING-TOP: 4px"><span style="COLOR: #008080"><span style="COLOR: #000000">//MiYu原创, 转帖请注明 : 转载自 <a href="http://www.cppblog.com/MiYu/">______________白白の屋</a></span><br><br>&nbsp;1</span>&nbsp;<span style="COLOR: #000000">#include&nbsp;</span><span style="COLOR: #000000">&lt;</span><span style="COLOR: #000000">iostream</span><span style="COLOR: #000000">&gt;</span><span style="COLOR: #000000"><br></span><span style="COLOR: #008080">&nbsp;2</span>&nbsp;<span style="COLOR: #000000"></span><span style="COLOR: #0000ff">int</span><span style="COLOR: #000000">&nbsp;main()<br></span><span style="COLOR: #008080">&nbsp;3</span>&nbsp;<span style="COLOR: #000000">{<br></span><span style="COLOR: #008080">&nbsp;4</span>&nbsp;<span style="COLOR: #000000">&nbsp;&nbsp;&nbsp;&nbsp;</span><span style="COLOR: #0000ff">int</span><span style="COLOR: #000000">&nbsp;n,&nbsp;d[</span><span style="COLOR: #000000">251</span><span style="COLOR: #000000">]&nbsp;</span><span style="COLOR: #000000">=</span><span style="COLOR: #000000">&nbsp;{&nbsp;</span><span style="COLOR: #000000">0</span><span style="COLOR: #000000">&nbsp;};<br></span><span style="COLOR: #008080">&nbsp;5</span>&nbsp;<span style="COLOR: #000000">&nbsp;&nbsp;&nbsp;&nbsp;</span><span style="COLOR: #0000ff">int</span><span style="COLOR: #000000">&nbsp;c1,&nbsp;c5,&nbsp;c10,&nbsp;c25,&nbsp;c50;<br></span><span style="COLOR: #008080">&nbsp;6</span>&nbsp;<span style="COLOR: #000000">&nbsp;&nbsp;&nbsp;&nbsp;</span><span style="COLOR: #0000ff">for</span><span style="COLOR: #000000">&nbsp;(&nbsp;n&nbsp;</span><span style="COLOR: #000000">=</span><span style="COLOR: #000000">&nbsp;</span><span style="COLOR: #000000">0</span><span style="COLOR: #000000">;&nbsp;n&nbsp;</span><span style="COLOR: #000000">!=</span><span style="COLOR: #000000">&nbsp;</span><span style="COLOR: #000000">251</span><span style="COLOR: #000000">;&nbsp;n&nbsp;</span><span style="COLOR: #000000">++</span><span style="COLOR: #000000">&nbsp;)<br></span><span style="COLOR: #008080">&nbsp;7</span>&nbsp;<span style="COLOR: #000000">&nbsp;&nbsp;&nbsp;&nbsp;{<br></span><span style="COLOR: #008080">&nbsp;8</span>&nbsp;<span style="COLOR: #000000">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;</span><span style="COLOR: #0000ff">for</span><span style="COLOR: #000000">&nbsp;(&nbsp;c50&nbsp;</span><span style="COLOR: #000000">=</span><span style="COLOR: #000000">&nbsp;</span><span style="COLOR: #000000">0</span><span style="COLOR: #000000">;&nbsp;c50&nbsp;</span><span style="COLOR: #000000">*</span><span style="COLOR: #000000">&nbsp;</span><span style="COLOR: #000000">50</span><span style="COLOR: #000000">&nbsp;</span><span style="COLOR: #000000">&lt;=</span><span style="COLOR: #000000">&nbsp;n;&nbsp;c50&nbsp;</span><span style="COLOR: #000000">++</span><span style="COLOR: #000000">&nbsp;)<br></span><span style="COLOR: #008080">&nbsp;9</span>&nbsp;<span style="COLOR: #000000">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;{<br></span><span style="COLOR: #008080">10</span>&nbsp;<span style="COLOR: #000000">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;</span><span style="COLOR: #0000ff">for</span><span style="COLOR: #000000">&nbsp;(&nbsp;c25&nbsp;</span><span style="COLOR: #000000">=</span><span style="COLOR: #000000">&nbsp;</span><span style="COLOR: #000000">0</span><span style="COLOR: #000000">;&nbsp;c50&nbsp;</span><span style="COLOR: #000000">*</span><span style="COLOR: #000000">&nbsp;</span><span style="COLOR: #000000">50</span><span style="COLOR: #000000">&nbsp;</span><span style="COLOR: #000000">+</span><span style="COLOR: #000000">&nbsp;c25&nbsp;</span><span style="COLOR: #000000">*</span><span style="COLOR: #000000">&nbsp;</span><span style="COLOR: #000000">25</span><span style="COLOR: #000000">&nbsp;</span><span style="COLOR: #000000">&lt;=</span><span style="COLOR: #000000">&nbsp;n;&nbsp;c25</span><span style="COLOR: #000000">++</span><span style="COLOR: #000000">&nbsp;)<br></span><span style="COLOR: #008080">11</span>&nbsp;<span style="COLOR: #000000">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;{<br></span><span style="COLOR: #008080">12</span>&nbsp;<span style="COLOR: #000000">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;</span><span style="COLOR: #0000ff">for</span><span style="COLOR: #000000">&nbsp;(&nbsp;c10&nbsp;</span><span style="COLOR: #000000">=</span><span style="COLOR: #000000">&nbsp;</span><span style="COLOR: #000000">0</span><span style="COLOR: #000000">;&nbsp;c50&nbsp;</span><span style="COLOR: #000000">*</span><span style="COLOR: #000000">&nbsp;</span><span style="COLOR: #000000">50</span><span style="COLOR: #000000">&nbsp;</span><span style="COLOR: #000000">+</span><span style="COLOR: #000000">&nbsp;c25&nbsp;</span><span style="COLOR: #000000">*</span><span style="COLOR: #000000">&nbsp;</span><span style="COLOR: #000000">25</span><span style="COLOR: #000000">&nbsp;</span><span style="COLOR: #000000">+</span><span style="COLOR: #000000">&nbsp;c10&nbsp;</span><span style="COLOR: #000000">*</span><span style="COLOR: #000000">&nbsp;</span><span style="COLOR: #000000">10</span><span style="COLOR: #000000">&nbsp;</span><span style="COLOR: #000000">&lt;=</span><span style="COLOR: #000000">&nbsp;n;&nbsp;c10</span><span style="COLOR: #000000">++</span><span style="COLOR: #000000">&nbsp;)<br></span><span style="COLOR: #008080">13</span>&nbsp;<span style="COLOR: #000000">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;{<br></span><span style="COLOR: #008080">14</span>&nbsp;<span style="COLOR: #000000">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;</span><span style="COLOR: #0000ff">for</span><span style="COLOR: #000000">&nbsp;(&nbsp;c5&nbsp;</span><span style="COLOR: #000000">=</span><span style="COLOR: #000000">&nbsp;</span><span style="COLOR: #000000">0</span><span style="COLOR: #000000">;&nbsp;c50&nbsp;</span><span style="COLOR: #000000">*</span><span style="COLOR: #000000">&nbsp;</span><span style="COLOR: #000000">50</span><span style="COLOR: #000000">&nbsp;</span><span style="COLOR: #000000">+</span><span style="COLOR: #000000">&nbsp;c25&nbsp;</span><span style="COLOR: #000000">*</span><span style="COLOR: #000000">&nbsp;</span><span style="COLOR: #000000">25</span><span style="COLOR: #000000">&nbsp;</span><span style="COLOR: #000000">+</span><span style="COLOR: #000000">&nbsp;c10&nbsp;</span><span style="COLOR: #000000">*</span><span style="COLOR: #000000">&nbsp;</span><span style="COLOR: #000000">10</span><span style="COLOR: #000000">&nbsp;</span><span style="COLOR: #000000">+</span><span style="COLOR: #000000">&nbsp;c5&nbsp;</span><span style="COLOR: #000000">*</span><span style="COLOR: #000000">&nbsp;</span><span style="COLOR: #000000">5</span><span style="COLOR: #000000">&nbsp;</span><span style="COLOR: #000000">&lt;=</span><span style="COLOR: #000000">&nbsp;n;&nbsp;c5</span><span style="COLOR: #000000">++</span><span style="COLOR: #000000">&nbsp;)<br></span><span style="COLOR: #008080">15</span>&nbsp;<span style="COLOR: #000000">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;{<br></span><span style="COLOR: #008080">16</span>&nbsp;<span style="COLOR: #000000">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;c1&nbsp;</span><span style="COLOR: #000000">=</span><span style="COLOR: #000000">&nbsp;n&nbsp;</span><span style="COLOR: #000000">-</span><span style="COLOR: #000000">&nbsp;(&nbsp;c50&nbsp;</span><span style="COLOR: #000000">*</span><span style="COLOR: #000000">&nbsp;</span><span style="COLOR: #000000">50</span><span style="COLOR: #000000">&nbsp;</span><span style="COLOR: #000000">+</span><span style="COLOR: #000000">&nbsp;c25&nbsp;</span><span style="COLOR: #000000">*</span><span style="COLOR: #000000">&nbsp;</span><span style="COLOR: #000000">25</span><span style="COLOR: #000000">&nbsp;</span><span style="COLOR: #000000">+</span><span style="COLOR: #000000">&nbsp;c10&nbsp;</span><span style="COLOR: #000000">*</span><span style="COLOR: #000000">&nbsp;</span><span style="COLOR: #000000">10</span><span style="COLOR: #000000">&nbsp;</span><span style="COLOR: #000000">+</span><span style="COLOR: #000000">&nbsp;c5&nbsp;</span><span style="COLOR: #000000">*</span><span style="COLOR: #000000">&nbsp;</span><span style="COLOR: #000000">5</span><span style="COLOR: #000000">&nbsp;);<br></span><span style="COLOR: #008080">17</span>&nbsp;<span style="COLOR: #000000">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;</span><span style="COLOR: #0000ff">if</span><span style="COLOR: #000000">&nbsp;(&nbsp;c1&nbsp;</span><span style="COLOR: #000000">+</span><span style="COLOR: #000000">&nbsp;c5&nbsp;</span><span style="COLOR: #000000">+</span><span style="COLOR: #000000">&nbsp;c10&nbsp;</span><span style="COLOR: #000000">+</span><span style="COLOR: #000000">&nbsp;c25&nbsp;</span><span style="COLOR: #000000">+</span><span style="COLOR: #000000">&nbsp;c50&nbsp;</span><span style="COLOR: #000000">&lt;=</span><span style="COLOR: #000000">&nbsp;</span><span style="COLOR: #000000">100</span><span style="COLOR: #000000">&nbsp;)&nbsp;<br></span><span style="COLOR: #008080">18</span>&nbsp;<span style="COLOR: #000000">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;{<br></span><span style="COLOR: #008080">19</span>&nbsp;<span style="COLOR: #000000">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;d[n]</span><span style="COLOR: #000000">++</span><span style="COLOR: #000000">;<br></span><span style="COLOR: #008080">20</span>&nbsp;<span style="COLOR: #000000">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;}<br></span><span style="COLOR: #008080">21</span>&nbsp;<span style="COLOR: #000000">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;}<br></span><span style="COLOR: #008080">22</span>&nbsp;<span style="COLOR: #000000">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;}<br></span><span style="COLOR: #008080">23</span>&nbsp;<span style="COLOR: #000000">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;}<br></span><span style="COLOR: #008080">24</span>&nbsp;<span style="COLOR: #000000">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;}<br></span><span style="COLOR: #008080">25</span>&nbsp;<span style="COLOR: #000000">&nbsp;&nbsp;&nbsp;&nbsp;}<br></span><span style="COLOR: #008080">26</span>&nbsp;<span style="COLOR: #000000">&nbsp;&nbsp;&nbsp;&nbsp;</span><span style="COLOR: #0000ff">while</span><span style="COLOR: #000000">&nbsp;(&nbsp;</span><span style="COLOR: #000000">~</span><span style="COLOR: #000000">scanf(</span><span style="COLOR: #000000">"</span><span style="COLOR: #000000">%d</span><span style="COLOR: #000000">"</span><span style="COLOR: #000000">,&nbsp;</span><span style="COLOR: #000000">&amp;</span><span style="COLOR: #000000">n)&nbsp;)<br></span><span style="COLOR: #008080">27</span>&nbsp;<span style="COLOR: #000000">&nbsp;&nbsp;&nbsp;&nbsp;{<br></span><span style="COLOR: #008080">28</span>&nbsp;<span style="COLOR: #000000">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;printf&nbsp;(&nbsp;</span><span style="COLOR: #000000">"</span><span style="COLOR: #000000">%d\n</span><span style="COLOR: #000000">"</span><span style="COLOR: #000000">,&nbsp;d[n]&nbsp;);<br></span><span style="COLOR: #008080">29</span>&nbsp;<span style="COLOR: #000000">&nbsp;&nbsp;&nbsp;&nbsp;}<br></span><span style="COLOR: #008080">30</span>&nbsp;<span style="COLOR: #000000">&nbsp;&nbsp;&nbsp;&nbsp;</span><span style="COLOR: #0000ff">return</span><span style="COLOR: #000000">&nbsp;</span><span style="COLOR: #000000">0</span><span style="COLOR: #000000">;<br></span><span style="COLOR: #008080">31</span>&nbsp;<span style="COLOR: #000000">}<br></span><span style="COLOR: #008080">32</span>&nbsp;<span style="COLOR: #000000"></span></div>
<br>母函数代码 :<br>
<div style="BORDER-BOTTOM: #cccccc 1px solid; BORDER-LEFT: #cccccc 1px solid; PADDING-BOTTOM: 4px; BACKGROUND-COLOR: #eeeeee; PADDING-LEFT: 4px; WIDTH: 98%; PADDING-RIGHT: 5px; FONT-SIZE: 13px; WORD-BREAK: break-all; BORDER-TOP: #cccccc 1px solid; BORDER-RIGHT: #cccccc 1px solid; PADDING-TOP: 4px">&nbsp;1&nbsp;#include&nbsp;&lt;iostream&gt;<br>&nbsp;2&nbsp;using&nbsp;namespace&nbsp;std;<br>&nbsp;3&nbsp;int&nbsp;c1[251][101];<br>&nbsp;4&nbsp;int&nbsp;c2[251][101];<br>&nbsp;5&nbsp;int&nbsp;mon[6]&nbsp;=&nbsp;{&nbsp;0,&nbsp;1,&nbsp;5,&nbsp;10,&nbsp;25,&nbsp;50&nbsp;};<br>&nbsp;6&nbsp;int&nbsp;sum[251];<br>&nbsp;7&nbsp;int&nbsp;main&nbsp;()<br>&nbsp;8&nbsp;{<br>&nbsp;9&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;c1[0][0]&nbsp;=&nbsp;1;<br>10&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;for&nbsp;(&nbsp;int&nbsp;i&nbsp;=&nbsp;1;&nbsp;i&nbsp;&lt;=&nbsp;5;&nbsp;++&nbsp;i&nbsp;)<br>11&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;{<br>12&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;for&nbsp;(&nbsp;int&nbsp;j&nbsp;=&nbsp;0;&nbsp;j&nbsp;&lt;=&nbsp;250;&nbsp;++&nbsp;j&nbsp;)&nbsp;<br>13&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;{<br>14&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;for&nbsp;(&nbsp;int&nbsp;k&nbsp;=&nbsp;0;&nbsp;k&nbsp;*&nbsp;mon[i]&nbsp;+&nbsp;j&nbsp;&lt;=&nbsp;250;&nbsp;++&nbsp;k&nbsp;)<br>15&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;{<br>16&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;for&nbsp;(&nbsp;int&nbsp;p&nbsp;=&nbsp;0;&nbsp;p&nbsp;+&nbsp;k&nbsp;&lt;=&nbsp;100;&nbsp;++&nbsp;p&nbsp;)<br>17&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;{<br>18&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;c2[&nbsp;j&nbsp;+&nbsp;k&nbsp;*&nbsp;mon[i]&nbsp;][p&nbsp;+&nbsp;k]&nbsp;+=&nbsp;c1[j][p];<br>19&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;}&nbsp;<br>20&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;}&nbsp;<br>21&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;}<br>22&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;for&nbsp;(&nbsp;int&nbsp;j&nbsp;=&nbsp;0;&nbsp;j&nbsp;!=&nbsp;251;&nbsp;++&nbsp;j&nbsp;)<br>23&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;{<br>24&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;for&nbsp;(&nbsp;int&nbsp;k&nbsp;=&nbsp;0;&nbsp;k&nbsp;!=&nbsp;101;&nbsp;++&nbsp;k&nbsp;)<br>25&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;{<br>26&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;c1[j][k]&nbsp;=&nbsp;c2[j][k];&nbsp;<br>27&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;c2[j][k]&nbsp;=&nbsp;0;<br>28&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;}<br>29&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;}<br>30&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;}<br>31&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;for&nbsp;(&nbsp;int&nbsp;j&nbsp;=&nbsp;0;&nbsp;j&nbsp;!=&nbsp;251;&nbsp;++&nbsp;j&nbsp;)<br>32&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;{<br>33&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;for&nbsp;(&nbsp;int&nbsp;i&nbsp;=&nbsp;0;&nbsp;i&nbsp;!=&nbsp;101;&nbsp;++&nbsp;i&nbsp;)<br>34&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;{<br>35&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;sum[j]&nbsp;+=&nbsp;c1[j][i]&nbsp;;<br>36&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;}<br>37&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;}<br>38&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;int&nbsp;N;<br>39&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;while&nbsp;(&nbsp;cin&nbsp;&gt;&gt;&nbsp;N&nbsp;)<br>40&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;{<br>41&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;<br>42&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;cout&nbsp;&lt;&lt;&nbsp;sum[N]&nbsp;&lt;&lt;&nbsp;endl;<br>43&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;}<br>44&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;return&nbsp;0;&nbsp;<br>45&nbsp;}&nbsp;<br>46&nbsp;</div>
</span></span>
<img src ="http://www.cppblog.com/MiYu/aggbug/122120.html" width = "1" height = "1" /><br><br><div align=right><a style="text-decoration:none;" href="http://www.cppblog.com/MiYu/" target="_blank">MiYu</a> 2010-08-03 22:49 <a href="http://www.cppblog.com/MiYu/archive/2010/08/03/122120.html#Feedback" target="_blank" style="text-decoration:none;">发表评论</a></div>]]></description></item></channel></rss>