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