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Cod sursa(job #329982)
//#include<fstream>
#include<fstream.h>
#include<math.h>
//#include<math>
//using namespace std;
int main()
{
long n,m,i,j,k,a[17][17],x[17]={0},s,s2,smax=0;
ifstream f("flip.in");ofstream g("flip.out");
f>>n>>m;
for(i=1;i<=n;i++)
for(j=1;j<=m;j++){f>>a[i][j];smax+=a[i][j];}
k=1;x[k]=0;
while(k)
{
while(x[k]<2)
{
x[k]++;
if(k==n)
{
for(j=1;j<=n;j++)g<<x[j];g<<endl;
/* s=0;
for(j=1;j<=m;j++)
{
s2=0;
for(i=1;i<=n;i++)
if(y[i])s2-=a[i][j];
else s2+=a[i][j];
s+=abs(s2);
}*/
}
else x[++k]=0;
// g<<s<<endl;
// if(s>smax)smax=s;
}
k--;
}
g<<smax<<'\n';
f.close();g.close();
return 0;
}