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#include <bits/stdc++.h>
using namespace std;
ifstream f("submultimi.in");
ofstream g("submultimi.out");
int n, x[20];
bool v[20];
void afis(int k)
{
for(int i = 1; i <= k; i++)
g << x[i] << " ";
g << "\n";
}
void bkt(int k)
{
for(int i = x[k - 1] + 1; i <= n; i++)
{
x[k] = i;
afis(k);
if(k < n)
bkt(k + 1);
}
}
int main()
{
f >> n;
bkt(1);
return 0;
}