import java.util.*;

public 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 || String.valueOf(i).contains("3")) System.out.println(i);
        }
    }
}