public class Hello{
    public static void Main(){
        string s = System.Console.ReadLine();
        string[] input = s.Split(' ');
        int a = int.Parse(input[0]);
        int b = int.Parse(input[1]);
        string searchNum = "3";
        
        for(int i = a; i <= b; i++)
        {
            
            if(i % 3 == 0)
            {
                System.Console.WriteLine(i);
                continue;
            }
            
            if(i.ToString().Contains(searchNum))
            {
                System.Console.WriteLine(i);
                continue;
            }

        }
        
    }
}