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Cod sursa(job #26793)
#include<fstream.h>
ifstream f("ograzi.in");
ofstream g("ograzi.in");
long i,j,nr,p,n,m;
unsigned long h,w,a[1000],b[1000],c[5000],l[5000];
void main()
{
f>>n>>m>>w>>h;
for(i=1;i<=n;i++)
f>>l[i]>>c[j];
for(i=1;i<=n;i++)
f>>a[i]>>b[i];
nr=0;
for(i=1;i<=m;i++)
{
p=0;
for(i=1;i<=n;i++)
if(a[i]<=l[i]&&a[i]>=l[i]-w&&b[i]<=c[i]&&b[i]>=c[i]-h)
{
p=1;
break;
}
if(p==1)
nr++;
}
g<<nr;
g.close();
f.close();
}