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#include <fstream>
#include <vector>
using namespace std;
ifstream fin("submultimi.in");
ofstream fout("submultimi.out");
int n;
vector <int> v;
void backt(int k)
{
if(k>n)
{
for(int i=0;i<v.size();i++)
{
fout<<v[i]<<' ';
}
fout<<'\n';
return;
}
backt(k+1);
v.push_back(k);
backt(k+1);
v.pop_back();
}
int main()
{
fin>>n;
backt(1);
return 0;
}