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Cod sursa(job #126772)
#include<fstream.h>
int main()
{int m,n,A[100][100],i,j;
ifstream fin("flip.in");
fin>>n>>m;
for(i=1;i<=n;i++)
for(j=1;j<=m;j++)
fin>>A[i][j];
int suma=0;long int s=0;
for(i=1;i<=n;i++)
{suma=0;
for(j=1;j<=m;j++)
suma+=A[i][j];
if(suma<0)
for(j=1;j<=m;j++)
A[i][j]*=(-1);}
for(j=1;j<=m;j++)
{suma=0;
for(i=1;i<=n;i++)
suma+=A[i][j];
if(suma<0)
for(i=1;i<=n;i++)
A[i][j]*=(-1);}
for(i=1;i<=n;i++)
for(j=1;j<=m;j++)
s+=A[i][j];
ofstream fout("flip.out");
fout<<s;
return 0;}