#include <iostream>
#include <vector>
#include <fstream>

using namespace std;

ifstream fin("submultimi.in");
ofstream fout("submultimi.out");

void bkt(int start, int  n, vector<int>& solutie) {
    for (int x : solutie) {
        fout << x << " ";
    }
    fout << "\n";

    for (int i = start; i <= n; i++) {
        solutie.push_back(i);

        bkt(i + 1, n, solutie);

        solutie.pop_back();
    }
}

int main() {
    int n, k;
    fin >> n;

    vector<int> solutie;

    bkt(1, n, solutie);
    return 0;
}