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#include <bits/stdc++.h>
using namespace std;
ifstream fin("submultimi.in");
ofstream fout("submultimi.out");
int st[20], n;
void Afis(int n)
{
for (int i = 1; i <= n; i++)
fout << st[i] << " ";
fout << "\n";
}
void Back(int top)
{
if(top>1) Afis(top-1);
for(int i=st[top-1]+1;i<=n;i++)
{
st[top]=i;
Back(top+1);
}
}
int main()
{
fin >> n;
Back(1);
return 0;
}