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Cod sursa(job #910592)
#include <stdio.h>
#include <stdlib.h>
#include<stdbool.h>
long long m,n,w,h,x,nr,y,i,j,k;
bool a[40001][50001];
int main()
{
freopen("ograzi.in","r",stdin);
freopen("ograzi.out","w",stdout);
scanf("%lli %lli %lli %lli",&m,&n,&w,&h);
for(k=0;k<m;k++)
{scanf("%lli lli",&x,&y);
for(i=x;i<x+h;i++)
for(j=y;j<y+w;j++)
a[i][j]=1;
}
for(k=0;k<=n;k++)
{scanf("%lli lli",&x,&y);
if(a[x][y]==1)
nr++;
}
printf("%lli",nr);
return 0;
}