#include <fstream>

using namespace std;

int n;

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

int submultime[30], len;

void backtrack(int valorant) {
    //fout << valorant <<"\n";
    if(valorant > n) {
        if(len == 0) {
            return;
        }
        for(int i = 1; i <= len; i++) {
            fout << submultime[i] << " ";
        }
        fout << "\n";
    }
    else {
        backtrack(valorant + 1);
        submultime[++len] = valorant;
        backtrack(valorant + 1);
        len--;
    }
}

int main() {
    fin >> n;
    backtrack(1);
    return 0;
}