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#include <iostream>
#include <fstream>
using namespace std;
ifstream fin("submultimi.in");
ofstream fout("submultimi.out");
int afis[17];
int num_elem;
void afis_sir(int k){
for(int i=1;i<=k;i++){
fout<<afis[i]<<" ";
}
fout<<'\n';
}
void backt(int k){
if (num_elem>=k){
for(int i=afis[k-1]+1;i<=num_elem;i++){
afis[k] = i;
afis_sir(k);
backt(k+1);
}
}
}
int main(){
fin>>num_elem;
backt(1);
return 0;
}