#include<bits/stdc++.h> using namespace std; int n,m; int a[10010]; int sou(int num,int last){ int time = last+1; for(int i = time;i <= n;i++){ a[num]= i; sou(num+1,i); if(num == m) { for(int j = 1;j <= m;j++){ cout << a[j]; } cout << endl; } } } signed main(){ cin >> n >> m; sou(1,0); return 0; }