import java.util.Scanner;
 
 public class Main {
     public static void main(String[] args) {
         Scanner sc = new Scanner(System.in);
         
         long A = sc.nextLong();
         long B = sc.nextLong();
         
         
         while(A<=B){
             if(A%3==0){
                 System.out.println(A);
             }else if((A/10)==3){
                 System.out.println(A);
                 
             }
             A++;
         }
 
     }
 }