Cod sursa(job #1155153)

Utilizator andreismara97Smarandoiu Andrei andreismara97 Data 26 martie 2014 18:15:41
Problema Problema Damelor Scor 90
Compilator cpp Status done
Runda Arhiva educationala Marime 0.69 kb
#include<fstream>
using namespace std;
ifstream in("damesah.in");
ofstream out("damesah.out");
int v[15],n,nr=0;

int cont(int k)
{
    for(int i=1;i<k;i++)
    if(v[k]==v[i] || v[k]==v[i]+k-i || v[k]==v[i]+i-k)
        return 0;
    return 1;
}

void back(int k)
{
    if(k==n+1)
    {
        nr++;
        if(nr==1)
            {
                for(int i=1;i<=n;i++)
                    out<<v[i]<<' ';
                out<<'\n';
            }
    }
    else
        for(int i=1;i<=n;i++)
        {
            v[k]=i;
            if(cont(k))
                back(k+1);
        }
}

int main ()
{
    in>>n;
    back(1);
    out<<nr<<'\n';
    return 0;
}