Cod sursa(job #1816776)

Utilizator BovisioNitica Ionut Bogdan Bovisio Data 26 noiembrie 2016 21:32:26
Problema Problema Damelor Scor 90
Compilator cpp Status done
Runda Arhiva educationala Marime 0.82 kb
#include <cstdio>
#include <cmath>

using namespace std;

int a[15][15],n,sol[15],c;

void afis()
{
    for(int i=1;i<=n;i++)
        printf("%i ",sol[i]);
    printf("\n");
}

bool valid(int x)
{
    for(int i=1;i<=x-1;i++)
    {
        if(sol[i] == sol[x] || abs(sol[x] - sol[i]) == abs(x-i))
            return false;
    }
    return true;
}

void bck(int x)
{
    for(int i=1;i<=n;i++)
    {
        sol[x] = i;
        if(valid(x))
        {
            if(x==n)
            {
                if(c<1)
                    afis();
                c++;
            }
            else
                bck(x+1);
        }
    }
}

int main()
{
    freopen("damesah.in","r",stdin);
    freopen("damesah.out","w",stdout);
    scanf("%i",&n);
    bck(1);
    printf("%i",c);
    return 0;
}