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Cod sursa(job #487608)
#include<fstream.h>
ifstream fin("flip.in");
ofstream fout("flip.out");
long a[17][17],b[17][17];
int i,j,s1,s2,ii,n,m,smax1,smax2;
int main()
{
fin>>n>>m;
for(i=1;i<=n;i++)
{
s1=s2=0;
for(j=1;j<=m;j++)
{
fin>>a[i][j];
b[i][j]=a[i][j];
s1=s1+a[i][j];
s2=s2+(a[i][j]*(-1));
}
if(s2>s1)
{
for(j=1;j<=m;j++)
a[i][j]=a[i][j]*(-1);
}
}
for(i=1;i<=n;i++)
{
for(j=1;j<=m;j++)
smax1+=a[i][j];
}
for(i=1;i<=m;i++)
{
s1=s2=0;
for(j=1;j<=n;j++)
{
s1=s1+b[j][i];
s2=s2+(b[j][i]*(-1));
}
if(s2>s1)
{
for(j=1;j<=n;j++)
b[j][i]=b[j][i]*(-1);
}
}
for(i=1;i<=n;i++)
{
for(j=1;j<=m;j++)
smax2+=b[i][j];
}
if(smax1>smax2)
fout<<smax1;
else
fout<<smax2;
return 0;
}