using System;
class P
{
    static void Main(string[] args)
    {
        string[] CSL = Console.ReadLine().Split();
        int A = int.Parse(CSL[0]);
        int B = int.Parse(CSL[1]);

        for (int i = A; i <= B; i++)
        {
            if (i % 3 == 0)
            {
                Console.WriteLine(i);
                continue;
            }
            foreach (char n in i.ToString())
            {
                if (n == '3')
                {
                    Console.WriteLine(i);
                    continue;
                }
            }
        }
       
    }
}