using System;

class Program
{
    static void Main()
    {
        string x = "";
        string[] line = Console.ReadLine().Trim().Split(' ');
        int A = int.Parse(line[0]);
        int B = int.Parse(line[1]);
        for(int i = A;i<B;i++){
            if(i % 3 == 0){
                Console.WriteLine(i);
            }
            else{
                 x = i.ToString();
                 if(x.Contains("3")){
                    Console.WriteLine(i);
                }
            }
        }

    }
}