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Cod sursa(job #111465)
#include<fstream.h>
ifstream f("teren.in");
ofstream g("teren.out");
int main()
{long n,m,c,a[300][2],x,i,j,k=0,nr,max=0,s;
f>>n>>m>>x;
for(i=1;i<=n;i++)
for(j=1;j<=m;j++)
{
f>>c;
if(c==1){k++;a[k][1]=i;a[k][2]=j;}
}
for(i=1;i<=n;i++)
for(j=1;j<=m;j++)
{
nr=0;
for(s=1;s<=k;s++)
if(a[s][1]<=i&&a[s][2]<=j)nr++;
if(nr==x&&(i*j)>max)max=i*j;
}
g<<max;
f.close();
g.close();
return 0;
}