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Cod sursa(job #499696)
#include<fstream>
using namespace std;
short int sum[301][301],a[301][301];
int n,i,j,sc,m,amax=0,cd,x,suma;
ifstream in("teren.in");
ofstream out("teren.out");
int main()
{
int j1,j2;
in>>n>>m>>x;
for(i=1;i<=n;i++)
for(j=1;j<=m;j++)
{
in>>a[i][j];
sum[i][j]=a[i][j]+sum[i][j-1];
}
for(j1=1;j1<=m;j1++)
for(j2=j1;j2<=m;j2++)
{
j=0;cd=0;
for(i=1;i<=n;i++)
{
if(i!=1)
{
cd=cd-(sum[i-1][j2]-sum[i-1][j1-1]);
}
while( j<=n && cd<=x )
{
j++;
cd+=sum[j][j2]-sum[j][j1-1];
}
if((j-i)*(j2-j1+1)>amax)
amax=(j-i)*(j2-j1+1);
}
}
out<<amax;
return 0;
}