import java.util.Scanner;

public class No207 {
    public static void main(String[] args) {
        Scanner sc = new Scanner(System.in);
        int a = sc.nextInt();
        int b = sc.nextInt();
        String check;

        while(a <= b){
            check = String.valueOf(a);
            if(check.indexOf("3") != -1){
                System.out.println(a);
            }else if(a % 3 == 0){
                System.out.println(a);
            }
            a++;
        }
    }
}