#include <fstream>
#include <vector>

using namespace std;
ifstream cin("submultimi.in");
ofstream cout("submultimi.out");
int n;
vector<int>v;
bool vizitat[20];
void backtracking(int val)
{
    if(val==n+1)
    {
        if(v.empty())
            return;
        for(int i=0; i<v.size(); i++)
            cout<<v[i]<<" ";
        cout<<'\n';
        return ;
    }
    backtracking(val+1);

    v.push_back(val);
    backtracking(val+1);
    v.pop_back();
}
int main()
{
    cin>>n;
    backtracking(1);
    return 0;
}