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();
		int i=0, j=0;
		char num;
		
		for(i=0; i<=2000000000; i++)
		{
			if(A<=i && i<=B){
				if(i%3==0){
					System.out.println(i);
				}else{
					String i_string=String.valueOf(i);
					while(j<i_string.length())
					{
						num=i_string.charAt(j);
						if(num==3){
							System.out.println(i);
						}
						j++;
					}
				}
			}
		}
    }
}