import java.util.Scanner;

public class Main {

    public static void main(String[] args) {
        Scanner sc = new Scanner(System.in);
        int a = sc.nextInt();
        int b = sc.nextInt();

        int num = a;

        while (num <= b) {
            if(num % 3 == 0) {
                System.out.println(num);
            }
            else {
                String s = String.valueOf(num);
                for(int i = 0; i < s.length(); i++)
                    if(s.charAt(i) == '3') {
                        System.out.println(num);
                        break;
                    }
            }

            ++num;
        }
    }

}