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(String.valueOf(i).indexOf("3") != -1 || i%3 == 0)System.out.println(i);
        }
    }
}