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Cod sursa(job #158879)
#include <fstream>
using namespace std;
ifstream f ("flip.in");
ofstream g ("flip.out");
int v[1000][16], n, m, sl[1000], sc[16];
void read ()
{ f >> n;
f >> m;
for (int i=0 ; i<n; i++)
for (int j=0; j<m; j++)
f >> v[n][m];
}
void change()
{ int s=0;
for (int i=0; i<n; i++)
for (int j=0; j<m; j++)
{ sl[i]=sl[i]+v[i][j];
sc[j]=sc[j]+v[i][j];
}
for (int i=0; i<n; i++)
while (sl[i]<0)
for (int j=0; j<m; j++)
v[i][j]/=-1;
for (int j=0; j<m; j++)
while (sc[j]<0)
for (int i=0; i<n; i++)
v[i][j]/=-1;
for (int i=0; i<n; i++)
for (int j=0; j<m; j++)
s=s+v[i][j];
g << s;
}
int main()
{ read();
change();
return 0;
}