import java.util.Scanner;
class Main{
	public static void main(String[] args) {
		Scanner sc = new Scanner(System.in);
		int a = sc.nextInt(), b = sc.nextInt();
		for(int i = a ; i < b ; i++) {
			if(i % 3 == 0) {
				System.out.println(i);
				continue;
			}
			String str = String.valueOf(i);
			char[] Array = str.toCharArray();
			for(char ch:Array) {
				if(ch == '3') {
					System.out.println(i);
					break;
				}
			}
		}
	}
}