OJ-Problems-Source/HDOJ/1264_autoAC.cpp
2016-08-13 17:16:08 +08:00

50 lines
1.3 KiB
C++

#include <stdio.h>
#include <string.h>
#define SWAP(a,b){int t=a;a=b;b=t;}
int hash[102][102];
void HashTable(int x1,int y1,int x2,int y2)
{
for(int i = x1;i < x2;i++)
for(int j = y1;j < y2;j++)
hash[i][j] = 1;
}
int CountHash(int minx,int miny,int maxx,int maxy)
{
int cnt = 0;
for(int i = minx;i < maxx;i++)
for(int j = miny;j < maxy;j++)if(hash[i][j])
{
cnt++;
}
return cnt;
}
int main()
{
int x1,x2,y1,y2,minx,miny,maxx,maxy;
while(scanf("%d%d%d%d",&x1,&y1,&x2,&y2))
{
memset(hash,0,sizeof(hash));
if(x1+x2+y1+y2==-8)break;
if(x1+x2+y1+y2==-4){puts("0");continue;}
if(x1>x2)SWAP(x1,x2);
if(y1>y2)SWAP(y1,y2);
minx = x1; miny = y1;
maxx = x2; maxy = y2;
HashTable(x1,y1,x2,y2);
while(scanf("%d%d%d%d",&x1,&y1,&x2,&y2),(x1+x2+y1+y2!=-4&&x1+x2+y1+y2!=-8))
{
if(x1>x2)SWAP(x1,x2);
if(y1>y2)SWAP(y1,y2);
if(minx>x1)minx = x1;
if(miny>y1)miny = y1;
if(maxx<x2)maxx = x2;
if(maxy<y2)maxy = y2;
HashTable(x1,y1,x2,y2);
}
int cnt=CountHash(minx,miny,maxx,maxy);
printf("%d\n",cnt);
if(x1+x2+y1+y2==-8)break;
}
return 0;
}