Cod sursa(job #3203207)

Utilizator DomnulMilandruMilandru Nicon-David DomnulMilandru Data 13 februarie 2024 12:05:40
Problema Problema Damelor Scor 100
Compilator cpp-64 Status done
Runda Arhiva educationala Marime 0.89 kb

#include <fstream>
#include <vector>
using namespace std;
ifstream cin("damesah.in");
ofstream cout("damesah.out");
int n;
vector<int> A;
vector<bool> fr;
vector<int> ans;
bool ok;
int nr;
void afisare()
{
    if(!ok)
      {
          ok=1;
          ans=A;
      }
    nr++;
}
bool verificare(int x,int y)
{
    for(int i=1;i<x;i++)
       if(i-A[i]==x-y || i+A[i]==x+y)
          return 0;
    return 1;
}
void bkt(int poz)
{
    if(poz==n+1)
    {
        afisare();
        return;
    }
    for(int i=1;i<=n;i++)
       if(!fr[i] && verificare(poz,i))
       {
           A[poz]=i;
           fr[i]=1;
           bkt(poz+1);
           fr[i]=0;
       }
}
int main()
{
    cin>>n;
    A.resize(n+1);
    fr.resize(n+1);
    ans.resize(n+1);
    bkt(1);
    for(int i=1;i<=n;i++)
       cout<<ans[i]<<" ";
    cout<<'\n';
    cout<<nr;
    return 0;
}