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#include <iostream>
#include <fstream>
#include <vector>
using namespace std;
ifstream fin("submultimi.in");
ofstream fout("submultimi.out");
vector<int> st;
void afisare()
{
if(st.empty()) return;
for(auto a: st)
fout << a << ' ' ;
fout << '\n';
}
void bkt(int pas, int m)
{
if(pas>m){
afisare();
return;
}
bkt(pas+1, m); //nu pun
st.push_back(pas);
bkt(pas+1, m); ///pun
st.pop_back();
}
int main()
{
int n;
fin >> n;
bkt(1, n);
return 0;
}