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Cod sursa(job #83125)
#include<fstream.h>
ifstream fin ("flip.in");
ofstream fout ("flip.out");
int l[100],c[100],s;
int main()
{ int n,m,j,i,a[100][100];
fin>>n>>m;
for (i=1;i<=n;i++)
for (j=1;j<=m;j++)
{ fin>>a[i][j];
}
for (i=1;i<=n;i++)
for (j=1;j<=m;j++)
l[i]+=a[i][j];
for (j=1;j<=m;j++)
for (i=1;i<=n;i++)
c[j]=c[j]+a[i][j];
for (i=1;i<=n;i++)
for (j=1;j<=m;j++)
if (l[i]<0)
a[i][j]=a[i][j]*(-1);
for (j=1;j<=m;j++)
for (i=1;i<=n;i++)
if (c[j]<0)
a[i][j]=a[i][j]*(-1);
for (i=1;i<=n;i++)
for (j=1;j<=m;j++)
s+=a[i][j];
fout <<s;
return 0;
}