#!/usr/bin/env python

indat = [int(i) for i in input().split()]

for i in range(indat[0], indat[1]+1):
    if i%3 == 0:
        print(i)
        continue
    else:
        nums = [int(x) for x in list(str(i))]
        for j in nums:
            if j == 3:
                print(i)
                break