Cod sursa(job #1396917)

Utilizator danalex97Dan H Alexandru danalex97 Data 23 martie 2015 09:37:59
Problema Problema Damelor Scor 100
Compilator cpp Status done
Runda Arhiva educationala Marime 0.79 kb
#include <fstream>
using namespace std;

ifstream F("damesah.in");
ofstream G("damesah.out");

const int N = 15;

int n,ans,v[N],c[N],d1[N<<1],d2[N<<1];

void go(int l)
{
    if ( l == n+1 )
    {
        if ( ans == 0 )
        {
            for (int i=1;i<=n;++i)
                G<<v[i]<<' ';
            G<<'\n';
        }
        ++ans;
    }
    else
        for (int i=1;i<=n;++i)
            if ( c[i] == 0 && d1[n+i-l-1] == 0 && d2[i+l] == 0 )
            {
                d1[n+i-l-1] = 1;
                d2[i+l] = 1;
                c[i] = 1;

                v[l] = i;
                go(l+1);

                d1[n+i-l-1] = 0;
                d2[i+l] = 0;
                c[i] = 0;
            }
}

int main()
{
    F>>n;
    go(1);

    G<<ans<<'\n';
}