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