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Cod sursa(job #360800)
#include<fstream.h>
#include<iostream.h>
fstream f("flip.in",ios::in);
fstream g("flip.out",ios::out);
main()
{ unsigned int m,n,i,j,k,l;
long int a[100][100],S,S1,aux,aux1;
f>>m>>n;
for(i=0;i<m;i++)
{for(j=0;j<n;j++)
f>>a[i][j];
}
for(i=0;i<m;i++)
{ S=0;
S1=0;
for(j=0;j<n;j++)
{ S=S+a[i][j];
S1=S1+(a[i][j]* -1);
}
if(S<S1)
{for(k=0;k<n;k++)
{ a[i][k]=-a[i][k];
}
}
}
for(j=0;j<n;j++)
{S=0;S1=0;
for(i=0;i<m;i++)
{ S=S+a[i][j];
S1=S1+(a[i][j]* -1);
}
if(S<S1)
{for(k=0;k<m;k++)
{
a[k][j]=-a[k][j];
}
}
}
S=0;
for(i=0;i<m;i++)
{for(j=0;j<n;j++)
S=S+a[i][j];
}
g<<S;
}