#include <iostream>
#include <fstream>
using namespace std;
ifstream fin("submultimi.in");
ofstream fout("submultimi.out");

int x[22], lg, n;

void gen(){
    for(int i = 1; i <= lg; ++i)
        fout << x[i] << " ";
    if(lg)
        fout << "\n";
    for(int i = x[lg]+ 1; i <= n; ++i){
        x[++lg] = i;
        gen();
        x[lg] = 0;
        lg--;
    }
}

int main(){
    ifstream fin("numere8.in");
    fin >> n;
    gen();
    return 0;
}