#!/usr/bin/python
# -*- coding: utf-8 -*-

### INPUT ###
#A, B = map(int, raw_input().split())
A = int(raw_input())
B = int(raw_input())
###
for i in range(A,B+1):
       	if "3" in str(i):
       		print i
       	elif i % 3 == 0:
       		print i