Domain and name must consist only of LOWERCASE letters and dots

Why always i get wrong answer in test#2??
which is the case i didnt condiser??

in the case>>
aa@ab.c
aa@as.a
aa@abs.l

my code return "7"

Edited by author 23.10.2014 02:42

Edited by author 23.10.2014 02:43

Hi. I'm getting WA on test 13 and I can't find my error. Can somebody get me some tricky cases?. Thanks in advance...

my solution is very fast using trie,but unfortuntly it use 1e6*27 memory ,and it is hard to optimize

How to solve this problem？I use trie tree and get MLE #2！！！！！！！！！！！

Edited by author 26.08.2012 09:02

Edited by author 26.08.2012 09:02

a@b
c@d
a@bce
4


a@b
c@dea
bc@de
bc@da
8

If you use the similar method with me, that may be a trick...^^

Can someone give some tricky tests?

Hello,
is abc@abc@abd a valid input? And if so, is the correct output 12?
Thanks