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#include <fstream>
#include <vector>
using namespace std;
ifstream fin("submultimi.in");
ofstream fout("submultimi.out");
vector<int>st;
void afisare(int k){
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(pas-1);
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);
return 0;
}