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

using namespace std;

int n;
vector<int> sol;
ofstream fout("submultimi.out");

void bkt(int step, int last_val) {
    if (step > 0) {
        for (int i = 0; i < step; ++i)
            fout << sol[i] << (i == step - 1 ? "" : " ");

        fout << "\n";
    }

    for (int i = last_val + 1; i <= n; ++i) {
        sol[step] = i;
        
        bkt(step + 1, i);
    }
}

int main() {
    ifstream fin("submultimi.in");
    
    if (!(fin >> n)) return 0;

    sol.resize(n);
    bkt(0, 0);

    fin.close();
    fout.close();

    return 0;
}