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