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