the problem isnt easy as it seems. can somebody give some hint? or test cases.

Believe me the problem is so easy that it appears a bit difficult. Problem does not require any logical, mathematical skills.

hint: Do not give attention to the second coming word "Penguin", you should set up counter for Emperor, Macaroni and Little penguins only. Good luck. If you need something you are welcom write to me rustam86@bk.ru