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#include <bits/stdc++.h>
#define newline "\n";
using namespace std;
ifstream fin("submultimi.in");
ofstream fout("submultimi.out");
int n, st[22];
void back() {
for(int i = 1; i <= st[0]; i++)
fout << st[i] <<" ";
if(st[0])
fout << newline;
for(int i = st[st[0]] + 1; i <= n; i++) {
st[++st[0]] = i;
back();
st[st[0]] = 0;
st[0]--;
}
}
int main() {
fin >> n;
back();
return 0;
}