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++){
			String str = String.valueOf(i);
			
			if(i % 3 == 0){
				System.out.println(i);
				continue;
			}
			for(int j = 0; j < str.length(); j++){
				if(str.charAt(j) == '3'){
					System.out.println(i);
					break;
				}
				
			}
		}
	}
}