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#include<iostream>
#include<vector>
#include<fstream>
using namespace std;
ifstream fin("submultimi.in");
ofstream fout("submultimi.out");
vector<int>st;
void afisare(int n){
if(!st.empty()){
for(int i=0;i<st.size();i++){
fout<<st[i]<<' ';
}
fout<<'\n';
}
}
void bkt(int pas,int n)
{
if(pas>n){
afisare(n);
return;
}
bkt(pas+1,n);
st.push_back(pas);
bkt(pas+1,n);
st.pop_back();
}
int main()
{
int n;
fin>>n;
bkt(1,n);
}