import java.math.BigInteger;
import java.util.Scanner;
public class Main{
	public static void main(String[] args){
		Scanner sc=new Scanner(System.in);
		int a=sc.nextInt();
		int b=sc.nextInt();
		String check;
		
		for(int i=a;i<=b;i++){
			check=String.valueOf(a);
			if(check.indexOf("3")==-1){
				System.out.println(a);
				continue;
			}
			if(a%3==0){
				System.out.println(a);
			}
		}		
	}
}