#include <bits/stdc++.h>
#define newline '\n'
using namespace std;
ifstream fin("submultimi.in");
ofstream fout("submultimi.out");
///**********************

int st[20], n, k;
void backTr() {
    for (int i = 1; i <= k; i++)
        fout << st[i] << ' ';
    if (k)
        fout << newline;
    for (int i = st[k] + 1; i <= n; i++) {
        st[++k] = i;
        backTr();
        k--;
    }
}

int main() {
    fin >> n;
    backTr();
    fout.close();
    return 0;
}