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Cod sursa(job #761723)
# include <fstream>
using namespace std;
int main ()
{
long N,M,a[20][16],S,S2,i,j;
float S1;
ifstream f("flip.in");
ofstream g("flip.out");
f>>N>>M;
for (i=1; i<=N; i++)
for (j=1; j<=M; j++)
f>>a[i][j];
S=0;
for (i=1; i<=N; i++)
{
S1=S2=0;
for (j=1; j<=M; j++)
{
if (a[i][j]<0) S1=S1-a[i][j];
else S2=S2+a[i][j];
}
for (j=1; j<=M; j++)
if (S1>S2) a[i][j]=a[i][j]*(-1);
S1=S2=0;
for (j=1; j<=M; j++)
{
if (a[j][i]<0) S1=S1-a[j][i];
else S2=S2+a[j][i];
}
for (j=1; j<=M; j++)
if (S1>S2) a[j][i]=a[j][i]*(-1);
for (j=1; j<=M; j++)
S=a[i][j];
}
g<<S;
f.close ();
g.close ();
return 0;
}