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