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#include <bits/stdc++.h>
#define ll long long
#define INF 0x3F3F3F3F
using namespace std;
const string fisier = "submultimi";
ifstream fin (fisier + ".in");
ofstream fout (fisier + ".out");
int n , x[105];
void solve(int k){
for (int i=1; i<=k; i++){
fout << x[i] << " ";
}
fout << '\n';
}
void back (int k){
for (int i=x[k-1]+1; i<=n; i++){
x[k] = i;
solve(k);
back(k + 1);
}
}
int main(){
ios_base::sync_with_stdio(false);
fin >> n;
back(1);
}