#include <iostream>
#include <cstdio>
#include <cstdlib>
#include <algorithm>
#include <string>
#include <vector>
#include <functional>
#include <sstream>
#include <iomanip>

struct Sekai{
  long long int A;
  long long int B;
};

int main(){
  Sekai s;
  std::cin >> s.A >> s.B;
  for(long long int i = s.A; i <= s.B;i++){
    if((i % 3 == 0))
      std::cout << i << std::endl;
    else{
      std::string str = std::to_string(i);
      for(int i = 0; i < str.size(); i++){
	if(str[i] == '3' || str[i] == '3\n'){
	  std::cout << str << std::endl;
	  break;
	}

      }
    }
  }
}