# -*- coding: utf-8 -*- 

def find_three(x):
    if x % 10 == 3:
        return x
    elif x >= 10:
        if find_three(x / 10) == 3:
            print x
    else:
        return None

A, B = map(int, raw_input().split())

while(A <= B):
    if A % 3 == 0:
        print A
    else:
        find_three(A)
    A += 1