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Cod sursa(job #582763)
#include<iostream>
#include<fstream>
using namespace std;
int main()
{ifstream f("flip.in");
ofstream g("flip.out");
int a[100][100],i,j,s,s1,n,m,k,min,aux;
f>>n>>m;
for(i=1;i<=n;i++)
for(j=1;j<=m;j++)
{ f>>a[i][j];}
min=0;
for(i=1;i<=n;i++)
{
s=0;
for(j=1;j<=m;j++)
s=s+a[j][i];
if(min==0)
min=s;
else
if(min>s)
{ min=s;
aux=i;}
}
for(i=1;i<=n;i++)
a[i][aux]=-a[i][aux];
min=0;
for(i=1;i<=n;i++)
{
s=0;
for(j=1;j<=m;j++)
s=s+a[i][j];
if(min==0)
min=s;
else
if(min>s)
{ min=s;
aux=i;}
}
for(i=1;i<=m;i++)
a[aux][i]=-a[aux][i];
s=0;
for(i=1;i<=n;i++)
for(j=1;j<=m;j++)
s=s+a[i][j];
g<<s;
}