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#include <bits/stdc++.h>
using namespace std;
ifstream fin ("submultimi.in");
ofstream fout("submultimi.out");
const int dim=20;
int n,sol[dim];
void afis(int pas){
for(int i=1;i<=pas;i++){
fout<<sol[i]<<' ';
}
fout<<'\n';
}
void backtracking(int pas){
for(int i=sol[pas-1]+1;i<=n;i++){
sol[pas]=i;
afis(pas);
if(pas<n){
backtracking(pas+1);
}
}
}
signed main(){
fin>>n;
backtracking(1);
}