import java.util.*;

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(Integer.toString(i).contains("3") || i%3 == 0){
                System.out.println(i);
            }
        }
    }
}