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#include <bits/stdc++.h>
using namespace std;
ifstream fin ("submultimi.in");
ofstream fout ("submultimi.out");
int n, sol[20];
void afis (int n)
{
for (int i=1; i<=n; i++)
fout << sol[i] << " ";
fout << '\n';
}
void back (int k)
{
for (int i=sol[k-1]+1; i<=n; i++)
{
sol[k]=i;
afis(k);
if (k<n)
back(k+1);
}
}
int main()
{
fin >> n;
back(1);
}