#include <bits/stdc++.h>
using namespace std;

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

void generateSubsets(int n, vector<int>& subset, int k) {
    if (!subset.empty()) {
        for (int i = 0; i < subset.size(); ++i) {
            fout << subset[i] << " ";
        }
        fout << "\n";
    }
    for (int i = k; i <= n; ++i) {
        subset.push_back(i);
        generateSubsets(n, subset, i + 1);
        subset.pop_back();
    }
}

int main() {
    int n;
    fin >> n;
    vector<int> subset;
    generateSubsets(n, subset, 1);
    return 0;
}