import java.util.*;

public class Main {
	public static void main(String[] args) {
		Scanner sc = new Scanner(System.in);
		int a = sc.nextInt();
		int b = sc.nextInt();
		for(int i = a;i <= b; i++) {
			if(i%3 == 0) {
				System.out.println(i);
			} else if(String.valueOf(i).matches(".*3.*")) {
				System.out.println(i);
			}
		}
	}
}