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#include <bits/stdc++.h>
using namespace std;
string np = "submultimi";
ifstream f(np + ".in");
ofstream g(np + ".out");
// #define f cin
// #define g cout
int n, v[20];
void afisare(int k)
{
for (int i = 1; i <= k; i++)
g << v[i] << " ";
g << '\n';
}
void back(int k)
{
for (int i = v[k - 1] + 1; i <= n; i++)
{
v[k] = i;
afisare(k);
back(k + 1);
}
}
int main()
{
f >> n;
back(1);
return 0;
}