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