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#include <bits/stdc++.h>
using namespace std;
ifstream f ("submultimi.in");
ofstream g ("submultimi.out");
vector<int> v;
void afisare(){
for(int c : v)
g << c << ' ';
g << "\n";
}
void bkt(int poz, int n){
if(poz > n){
if(v.size())
afisare();
return;
}
bkt(poz +1, n);
v.push_back(poz);
bkt(poz +1, n);
v.pop_back();
}
int main()
{
int n;
f >> n;
bkt(1, n);
return 0;
}