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Cod sursa(job #387929)
#include<fstream.h>
long v[17][17],i,j,s1,s2,s,ok1,ok2,n,m,suma;
ifstream fin("flip.in");
ofstream fout("flip.out");
main()
{
fin>>n;
fin>>m;
for(i=1;i<=n;i++)
{
for(j=1;j<=m;j++)
fin>>v[i][j];
}
s1=0;
for(i=1;i<=n;i++)
{
s=0;
for(j=1;j<=m;j++)
s=s+v[i][j];
if(s<s1)
{
s1=s;
ok1=i;
}
}
s2=0;
for(j=1;j<=m;j++)
{
s=0;
for(i=1;i<=n;i++)
s=s+v[i][j];
if(s<s2)
{
s2=s;
ok2=j;
}
}
if(ok1)
for(j=1;j<=m;j++)
v[ok1][j]=-v[ok1][j];
if(ok2)
for(i=1;i<=n;i++)
v[i][ok2]=-v[i][ok2];
for(i=1;i<=n;i++)
for(j=1;j<=m;j++)
suma=suma+v[i][j];
fout<<suma;
}