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#include <iostream>
#include <fstream>
using namespace std;
#define ll unsigned long long
ifstream fin("submultimi.in");
ofstream fout("submultimi.out");
int n,v[20];
void afisare(int k){
for(int i=1;i<=k;i++){
fout<<v[i]<<" ";
}
fout<<"\n";
}
void backtr(int k){
if(k<=n){
for(int i=v[k-1]+1;i<=n;i++){
v[k]=i;
afisare(k);
backtr(k+1);
}
}
}
int main()
{
fin>>n;
backtr(1);
return 0;
}