-----Input-----

The input consists of a single string of uppercase letters A-Z. The length of the string is between 1 and 10 characters, inclusive.

-----Output-----

Output "YES" or "NO".

-----Examples-----

Input NEAT

Output YES

Input WORD

Output NO

Input CODER

Output NO

Input APRILFOOL

Output NO

Input AI

Output YES

Input JUROR

Output YES

Input YES

Output NO