/* package whatever; // don't place package name! */

import java.util.*;
import java.lang.*;
import java.io.*;

/* Name of the class has to be "Main" only if the class is public. */
class Ideone
{
    public static void main (String[] args) throws java.lang.Exception
    {
        // your code goes here
        BufferedReader br = new BufferedReader(new InputStreamReader(System.in));
        String[] lines = br.readLine().split(" ");
        long a = Long.parseLong(lines[0]);
        long b = Long.parseLong(lines[1]);
        for(long i=a;i<=b;i++){
            if(i%3l == 0 || Long.toString(i).indexOf("3") >= 0){
                System.out.println(i);
            }
        }
    }

}