using System;
using System.Collections.Generic;
using System.Linq;

class Program
{
    public void Solve()
    {
        string[] AB = Console.ReadLine().Split(' ');

        long A = long.Parse(AB[0]);
        long B = long.Parse(AB[1]);

        for (long i = A; i <= B; i++)
        {
            if (i % 3 == 0) { Console.WriteLine(i); continue; }
            if (i.ToString().IndexOf("3") >= 0) { Console.WriteLine(i); }
        }
    }

    static void Main()
    {
        var solver = new Program();
        solver.Solve();
    }
}