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#include <bits/stdc++.h>
#define DAU ios_base::sync_with_stdio(false); cin.tie(NULL); cout.tie(NULL);
#define PLEC return 0;
using namespace std;
ifstream fin("submultimi.in");
ofstream fout("submultimi.out");
#define cin fin
#define cout fout
#define N 500005
int n, v[N];
void afis(int k)
{
for(int i = 1 ; i <= k ; i++)cout << v[i] << " ";
cout << '\n';
}
void fa(int k)
{
for(int i = v[k-1]+1 ; i <= n ; i++)
{
v[k] = i;
afis(k);
if(k < n)fa(k+1);
}
}
int main()
{
DAU
cin >> n;
fa(1);
PLEC
}