func_code_string: #include <bits/stdc++.h>   using namespace std;   int main() {       int n, m;       cin >> n >> m;       int cnt = 0;       set <int> s;       while(n) {           s.insert(n % m);           cnt++;           n /= m;       }       if(s.size() == cnt) cout <<  YES n ;       else cout <<  NO n ;       return 0;   }   