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