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Cod sursa(job #888197)
#include <iostream>
#include <fstream>
using namespace std;
int s,a[20][20],sum;
int m,n,i,j;
int main()
{
ifstream f("flip.in");
ofstream g("flip.out");
f>>n>>m;
for(i=1; i<=m; i++)
for(j=1; j<=n; j++)
{
f>>a[i][j];
s+=a[i][j];
}
for(i=1; i<=n; i++)
{
sum=s;
for(j=1; j<=m; j++)
sum+=-2*a[i][j];
if(sum>s)
{
g<<i<<" ";
s=sum;
for(j=1; j<=m; j++)
a[i][j]=-a[i][j];
}
}
for(i=1; i<=m; i++)
{
sum=s;
for(j=1; j<=n; j++)
sum+=-2*a[i][j];
if(sum>s)
{
g<<i<<" ";
s=sum;
for(j=1; j<=n; j++)
a[i][j]=-a[i][j];
}
}
g<<s;
return 0;
}