import java.util.*;
import java.util.stream.*;
public class Main{
	public static void main(String... args){
		Scanner sc=new Scanner(System.in);
		long a=sc.nextLong();
		long b=sc.nextLong();
		for(long i=a;i<=b;i++){
			if(i%3==0||isAttached3(i)){
				System.out.println(i);
			}
		}
	}
	public static boolean isAttached3(long x){
		String s=Long.toString(x);
		for(char c:s.toCharArray()){
			if(c=='3')return true;
		}
		return false;
	}
}