Happy or Sad

Seungyeop often puts emoticons in his text messages to show how he feels. Each emoticon he uses is three characters stuck together: :-) for a happy face and :-( for a sad face.

Hyeseong thinks the emoticons are a fake-cute habit and dislikes them, so she wants a program that reads a message from Seungyeop and reports only its overall mood.

The first line holds between 1 and 255 characters. The line can contain spaces.

Print one line according to these rules.

• If the line has no emoticon at all, print none.
• If the number of happy emoticons equals the number of sad emoticons, print unsure.
• If there are more happy emoticons than sad ones, print happy.
• If there are more sad emoticons than happy ones, print sad.