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/**//*
ID: lorelei3
TASK: packrec
LANG: C++
*/
#include <fstream>
#include <algorithm>
#include <iostream>
using namespace std;
const int N = 105;
typedef struct Rect 
{
int width;
int height;
bool operator < (const Rect& r)const{
return width<r.width || (width==r.width && height<r.height) ;
}
} Rect;
Rect rotate(Rect r){
Rect nr;
nr.height = r.width;
nr.width = r.height;
return nr;
}
int max(int a, int b){
return a>b?a:b;
}
int min(int a, int b){
return a<b?a:b;
}
int bestarea;
int bestheight[N];
Rect r[4];
void record(Rect r){
if(r.height*r.width<bestarea || bestarea==0){
bestarea = r.height*r.width;
for(int i=0; i<N; ++i)
bestheight[i]=0;
}
if(r.height*r.width==bestarea){
bestheight[min(r.height,r.width)]=1;
}
}
void check(){
int i = 0;
Rect rect;
//case 1
rect.width=0;
rect.height=0;
for(i=0; i<4; ++i){
rect.width += r[i].width;
rect.height = max(rect.height, r[i].height);
}
record(rect);
//case 2
rect.width=0;
rect.height=0;
for(i=0; i<3;++i){
rect.width += r[i].width;
rect.height = max(rect.height, r[i].height);
}
rect.height += r[3].height;
rect.width = max(rect.width, r[3].width);
record(rect);
//case 3
rect.width = r[0].width + r[1].width;
rect.height = max(r[0].height, r[1].height);
rect.width = max(rect.width, r[2].width);
rect.height += r[2].height;
rect.width += r[3].width;
rect.height = max(rect.height, r[3].height);
record(rect);
//case 4 5
rect.width = r[0].width+r[1].width;
rect.height = max(r[0].height, r[1].height);
rect.width += max(r[2].width, r[3].width);
rect.height = max(rect.height , r[2].height+r[3].height);
record(rect);
//case 6
rect.height = max(r[0].height+r[2].height, r[1].height+r[3].height);
rect.width = r[0].width + r[1].width;
/**//* do 2 and 1 touch? */
if(r[0].height < r[1].height)
rect.width = max(rect.width, r[2].width+r[1].width);
/**//* do 2 and 3 touch? */
if(r[0].height+r[2].height > r[1].height)
rect.width = max(rect.width, r[2].width+r[3].width);
/**//* do 0 and 3 touch? */
if(r[1].height < r[0].height)
rect.width = max(rect.width, r[0].width+r[3].width);
/**//* maybe 2 or 3 sits by itself */
rect.width = max(rect.width, r[2].width);
rect.width = max(rect.width, r[3].width);
record(rect);
}
void checkrotate(int n){
if(n==4){
check();
return;
}
checkrotate(n+1);
r[n] = rotate(r[n]);
checkrotate(n+1);
r[n] = rotate(r[n]);
}
void checkpermute(){
sort(r, r+4);
do{
checkrotate(0);
}while(next_permutation(r, r+4));
}
int main(){
int i;
ifstream in("packrec.in");
ofstream out("packrec.out");
for(i=0; i<4; ++i)
in>>r[i].width>>r[i].height;
checkpermute();
out<<bestarea<<endl;
for(i=0;i<N;++i){
if(bestheight[i]){
out<<i<<" "<<bestarea/i<<endl;
}
}
return 0;
}posted on 2010-11-09 12:52
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