C++博客-Competehttp://www.cppblog.com/icemoon/I can't fall down before I diezh-cnThu, 09 Apr 2026 05:04:25 GMTThu, 09 Apr 2026 05:04:25 GMT602010年ACM-ICPC亚洲区预选赛http://www.cppblog.com/icemoon/archive/2010/08/14/123431.html丁立洋丁立洋Sat, 14 Aug 2010 07:00:00 GMThttp://www.cppblog.com/icemoon/archive/2010/08/14/123431.htmlhttp://www.cppblog.com/icemoon/comments/123431.htmlhttp://www.cppblog.com/icemoon/archive/2010/08/14/123431.html#Feedback0http://www.cppblog.com/icemoon/comments/commentRss/123431.htmlhttp://www.cppblog.com/icemoon/services/trackbacks/123431.html阅读全文

丁立洋 2010-08-14 15:00 发表评论
]]>POJ 2719http://www.cppblog.com/icemoon/archive/2010/08/12/123229.html丁立洋丁立洋Thu, 12 Aug 2010 09:38:00 GMThttp://www.cppblog.com/icemoon/archive/2010/08/12/123229.htmlhttp://www.cppblog.com/icemoon/comments/123229.htmlhttp://www.cppblog.com/icemoon/archive/2010/08/12/123229.html#Feedback1http://www.cppblog.com/icemoon/comments/commentRss/123229.htmlhttp://www.cppblog.com/icemoon/services/trackbacks/123229.html阅读全文

丁立洋 2010-08-12 17:38 发表评论
]]>POJ 2282 The Counting Problemhttp://www.cppblog.com/icemoon/archive/2010/08/12/123164.html丁立洋丁立洋Thu, 12 Aug 2010 03:49:00 GMThttp://www.cppblog.com/icemoon/archive/2010/08/12/123164.htmlhttp://www.cppblog.com/icemoon/comments/123164.htmlhttp://www.cppblog.com/icemoon/archive/2010/08/12/123164.html#Feedback0http://www.cppblog.com/icemoon/comments/commentRss/123164.htmlhttp://www.cppblog.com/icemoon/services/trackbacks/123164.htmlsolve函数以123为例，先看以12开头的数，可知各位只能是0，1，2，3；在cnt数组中下标为0，1，2，3（共4个数）的数分别加1，然后计算此时120~123这数中1和2出现的个数（不算个位，个位已经加过），即为4次；然后cnt[1]+=4,cnt[2]+=4；然后考虑从0到119中个位数字出现的次数，为123/10=12次。这都是个位情况，若处理十位则要考虑到本来十位数后面还跟有10个个位数，计算十位数字个数要乘以10，同样，百位数要乘1000.......(不多说）
关键在处理个位0时要小心，每次让cnt[0]-=opera，因为计算12时（也就是递归的第二层），会再次得到一个0，然后把0*opera加入到cnt[0]中，此时已出现重复，应把重复的计算消灭掉  阅读全文

丁立洋 2010-08-12 11:49 发表评论
]]>POJ 2187 Beauty Contest 凸包问题http://www.cppblog.com/icemoon/archive/2010/06/01/116905.html丁立洋丁立洋Tue, 01 Jun 2010 08:13:00 GMThttp://www.cppblog.com/icemoon/archive/2010/06/01/116905.htmlhttp://www.cppblog.com/icemoon/comments/116905.htmlhttp://www.cppblog.com/icemoon/archive/2010/06/01/116905.html#Feedback0http://www.cppblog.com/icemoon/comments/commentRss/116905.htmlhttp://www.cppblog.com/icemoon/services/trackbacks/116905.htmlACM纳新笔试刚刚结束，看卷子看的我烦透了
想想去年的哈工大之行，好歹也能拿个奖，可今年这帮大二的还不练，大一的又什么都不会，老师也不管，甚至还取消了暑期集训，天亡我？弱校一旦断了线，想再好好搞ACM想再拿奖可就太难了。。。
我家教教出来的初一小孩都比系里多数大学生强
没别的意思，发发牢骚  阅读全文

丁立洋 2010-06-01 16:13 发表评论
]]>POJ 2014（Flow Layout）http://www.cppblog.com/icemoon/archive/2010/05/27/116488.html丁立洋丁立洋Thu, 27 May 2010 10:02:00 GMThttp://www.cppblog.com/icemoon/archive/2010/05/27/116488.htmlhttp://www.cppblog.com/icemoon/comments/116488.htmlhttp://www.cppblog.com/icemoon/archive/2010/05/27/116488.html#Feedback0http://www.cppblog.com/icemoon/comments/commentRss/116488.htmlhttp://www.cppblog.com/icemoon/services/trackbacks/116488.html阅读全文

丁立洋 2010-05-27 18:02 发表评论
]]>POJ2295 A DP Problem 解一元方程（只有加减没有乘除没有括号）http://www.cppblog.com/icemoon/archive/2010/05/27/116461.html丁立洋丁立洋Thu, 27 May 2010 06:46:00 GMThttp://www.cppblog.com/icemoon/archive/2010/05/27/116461.htmlhttp://www.cppblog.com/icemoon/comments/116461.htmlhttp://www.cppblog.com/icemoon/archive/2010/05/27/116461.html#Feedback0http://www.cppblog.com/icemoon/comments/commentRss/116461.htmlhttp://www.cppblog.com/icemoon/services/trackbacks/116461.html阅读全文

丁立洋 2010-05-27 14:46 发表评论
]]>POJ1528 Perfection 一道水题，却贡献3WA，就因为一个1，好好看题很重要http://www.cppblog.com/icemoon/archive/2010/05/27/116460.html丁立洋丁立洋Thu, 27 May 2010 06:41:00 GMThttp://www.cppblog.com/icemoon/archive/2010/05/27/116460.htmlhttp://www.cppblog.com/icemoon/comments/116460.htmlhttp://www.cppblog.com/icemoon/archive/2010/05/27/116460.html#Feedback0http://www.cppblog.com/icemoon/comments/commentRss/116460.htmlhttp://www.cppblog.com/icemoon/services/trackbacks/116460.html阅读全文

丁立洋 2010-05-27 14:41 发表评论
]]>POJ 2676 (Sudoku）经典DFS 500MS 240Khttp://www.cppblog.com/icemoon/archive/2010/04/21/113122.html丁立洋丁立洋Wed, 21 Apr 2010 02:02:00 GMThttp://www.cppblog.com/icemoon/archive/2010/04/21/113122.htmlhttp://www.cppblog.com/icemoon/comments/113122.htmlhttp://www.cppblog.com/icemoon/archive/2010/04/21/113122.html#Feedback0http://www.cppblog.com/icemoon/comments/commentRss/113122.htmlhttp://www.cppblog.com/icemoon/services/trackbacks/113122.html阅读全文

丁立洋 2010-04-21 10:02 发表评论
]]>POJ 3252 (Round Numbers)http://www.cppblog.com/icemoon/archive/2010/04/21/113120.html丁立洋丁立洋Wed, 21 Apr 2010 01:55:00 GMThttp://www.cppblog.com/icemoon/archive/2010/04/21/113120.htmlhttp://www.cppblog.com/icemoon/comments/113120.htmlhttp://www.cppblog.com/icemoon/archive/2010/04/21/113120.html#Feedback0http://www.cppblog.com/icemoon/comments/commentRss/113120.htmlhttp://www.cppblog.com/icemoon/services/trackbacks/113120.html阅读全文

丁立洋 2010-04-21 09:55 发表评论
]]>POJ 1970 五子棋问题http://www.cppblog.com/icemoon/archive/2010/04/20/113050.html丁立洋丁立洋Tue, 20 Apr 2010 02:41:00 GMThttp://www.cppblog.com/icemoon/archive/2010/04/20/113050.htmlhttp://www.cppblog.com/icemoon/comments/113050.htmlhttp://www.cppblog.com/icemoon/archive/2010/04/20/113050.html#Feedback0http://www.cppblog.com/icemoon/comments/commentRss/113050.htmlhttp://www.cppblog.com/icemoon/services/trackbacks/113050.html阅读全文

丁立洋 2010-04-20 10:41 发表评论
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