#coding: utf-8
##yuki_207

def include3(x):
 if x==0:
  return 0
 else:
  return x%10==3 or include3(x/10)

def multiples3(x):
 if x%3==0:
  return 1
 return 0

s=[]
s=map(int,raw_input().split())
a=s[0]
b=s[1]


for x in xrange(a,b+1):
 if include3(x):
  print x
 elif multiples3(x):
  print x