Cod sursa(job #3146771)

Utilizator Bianca2507Negret Bianca Bianca2507 Data 22 august 2023 13:59:37
Problema Problema Damelor Scor 100
Compilator cpp-64 Status done
Runda Arhiva educationala Marime 0.86 kb
#include <fstream>

using namespace std;
ifstream cin("damesah.in");
ofstream cout("damesah.out");
int n,x[15],fr[15],nr;
int modul(int a)
{
    if(a>0)
        return a;
    else
        return -a;
}
int f(int pas)
{
    for(int i=1;i<pas;i++)
        if(modul(pas-i)==modul(x[pas]-x[i]))
        return 0;
    return 1;
}
void back(int pas)
{
    if(pas>n)
    {
        nr++;
        if(nr==1)
        {
            for(int i=1;i<=n;i++)
               {
                  cout<<x[i]<<" ";
               }

        }
    }
    else
    {
        for(int i=1;i<=n;i++)
            if(fr[i]==0)
        {
            x[pas]=i;
            fr[i]=1;
            if(f(pas)==1)
                back(pas+1);
            fr[i]=0;
        }
    }
}
int main()
{
   cin>>n;
   back(1);
   cout<<'\n';
cout<<nr;
    return 0;
}