Cod sursa(job #2177121)

Utilizator Andrei2000Andrei Mihailescu Andrei2000 Data 18 martie 2018 12:54:35
Problema Jocul Flip Scor 100
Compilator cpp Status done
Runda Arhiva de probleme Marime 0.64 kb
#include <bits/stdc++.h>

using namespace std;

ifstream fin ("flip.in");
ofstream fout ("flip.out");

int n,m,v[18][18],vv[18],sum=0;

void bck(int q){
    if(q==m+1){
        int tsum=0;
        for(int i=1;i<=n;++i)tsum+=abs(vv[i]);
        sum=max(sum,tsum);
        return;
    }
    bck(q+1);
    for(int i=1;i<=n;++i)
        vv[i]-=2*v[i][q];
    bck(q+1);
    for(int i=1;i<=n;++i)
        vv[i]+=2*v[i][q];
}

int main()
{
    fin>>n>>m;
    for(int i=1;i<=n;++i)
        for(int j=1;j<=m;++j){
            fin>>v[i][j];
            vv[i]+=v[i][j];
        }
    bck(1);
    fout<<sum<<'\n';
    return 0;
}