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

class Main {
    public static boolean hasThree(int n){
    	if(n==0){ return false; }
    	else if((n-3)%10 == 0){ return true; }
    	else { return hasThree(n/10); }
    }
    public static void main (String[] args) {
        Scanner sc = new Scanner(System.in);
        int a = Integer.parseInt(sc.next());
        int b = Integer.parseInt(sc.next());
        for(int i = a; i <= b; i++){
            if (i%3 == 0 || hasThree(i)) { System.out.println(i);}
        }
    }
}