import java.util.Scanner;
 
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);
			}
		}
	}
}