#include <fstream>

using namespace std;

void genSubset(int index, int k, int a[], int n, ofstream &g)
{
    if (index >= n || k > n)
        return;

    a[index] = k;

    for (int i = 0; i <= index; i++)
        g << a[i] << " ";
    g << '\n';

    genSubset(index + 1, k + 1, a, n, g);
    genSubset(index, k + 1, a, n, g);
}

int main()
{
    int n;
    ifstream f("submultimi.in");
    f >> n;
    f.close();
    int a[n];
    ofstream g("submultimi.out");
    genSubset(0, 1, a, n, g);
    g.close();
    return 0;
}