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Cod sursa(job #158253)
#include<iostream.h>
#include<fstream.h>
ifstream f("flip.in");
ofstream g("flip.out");
long m,n,v[100][100];
void citire()
{
f>>n>>m;
for(int i=1;i<=n;i++)
for(int j=1;j<=m;j++)
f>>v[i][j];
}
void prelucrare()
{int i,j;
for(i=1;i<=n;i++)
{int s=0;
for(j=1;j<=m;j++)
s+=v[i][j];
if(s<0)
for(j=1;j<=m;j++)
v[i][j]=v[i][j]*(-1);
}
for(j=1;j<=m;j++)
{int s=0;
for(i=1;i<=n;i++)
s+=v[i][j];
if(s<0)
for(i=1;i<=n;i++)
v[i][j]=v[i][j]*(-1);
}
}
int s=0;
void afisare()
{
for(int i=1;i<=n;i++)
for(int j=1;j<=m;j++)
s+=v[i][j];
g<<s;
}
int main()
{
citire();
prelucrare();
afisare();
}