Cod sursa(job #792951)

Utilizator VisuianMihaiMihai Visuian VisuianMihai Data 1 octombrie 2012 17:41:55
Problema Submultimi Scor 100
Compilator cpp Status done
Runda Arhiva educationala Marime 0.63 kb
#include <fstream>
using namespace std;
ifstream fin("submultimi.in");
ofstream fout("submultimi.out");
short int x[17], n;
bool used[17];
void Write(int k)
{
    for ( int i = 1; i <= k; i++ )
        fout << x[i] << ' ';
    fout << '\n';
}
void back(int k, int n)
{
    for ( int i = 1; i <= n; i++ )
    {
        x[k] = i;
        if ( !used[i] && x[k-1] < i)
        {
            used[i] = 1;
            if ( k <= n )
                Write(k);
            back(k+1,n);
            used[i] = 0;
        }
    }
}
int main()
{
    fin >> n;
    back(1,n);
    fin.close();
    fout.close();
    return 0;
}