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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 k)
{
for(int i = 1;i <= k;i++)
fout << a[i] << " ";
fout << "\n";
}
void gen(int k)
{
if (k > 1) afisare(k - 1);
for (int i = a[k - 1] + 1; i <= n; i++)
{
a[k] = i;
gen(k + 1);
}
}
int main()
{
fin >> n;
cout << n;
gen(1);
return 0;
}