#include <iostream>
using namespace std;

bool check(int x){
   while(x > 0){
      if(x % 10 == 3) return true;
      x /= 10;
   }
   return false;
}

int main(){
   long long a,b;
   cin >> a >> b;
   for(long long i = a;i <= b;i++) if(!(i % 3) || check(i)) cout << i << endl;
}