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Cod sursa(job #94967)
#include<fstream.h>
ifstream f("flip.in");
ofstream g("flip.out");
int main()
{long a[17][17],s1=0,s2=0,st=0;
int i,j,n,m;
f>>n>>m;
for(i=0;i<n;i++)
for(j=0;j<m;j++)
f>>a[i][j];
for(i=0;i<n;i++)
{ for(j=0;j<m;j++)
{s1+=a[i][j]; s2-=a[i][j];}
if(s1>s2) st+=s1;
else { st+=s2;
for(j=0;j<m;j++) a[i][j]=-a[i][j];}
}
for(j=0;j<m;j++)
{ for(i=0;i<n;i++)
{st-=a[j][i];
s1+=a[j][i];
s2+=a[j][i];
}
if(s1>s2) st+=s1;
else st+=s2;
}
g<<st;
f.close();
g.close();
return 0;
}