import java.util.Arrays;
import java.util.Scanner;
public class length{
    public static void main(String[] args){
        Scanner sc = new Scanner(System.in);
	    int a = sc.nextInt();
	    int b = sc.nextInt();
	    int i;
	    for(i=a; i<=b;i++){
	        String s = Integer.toString(i);
	        if(i % 3 ==0||s.contains("3")){
	            System.out.println(i);
	        }
	    }
		sc.close();
    }
}