Andrew is given a phrase so he has curiosity to check it's palindrome or not. A phrase is a palindrome if, after converting all uppercase letters into lowercase letters and removing all non-alphanumeric characters, it reads the same forward and backward. Alphanumeric characters include letters and numbers.

Given a string s, print yes if it is a palindrome, or no otherwise.

yes

Input:
A man, a plan, a canal: Panama

Output:
yes

Explanation:
"amanaplanacanalpanama" is a palindrome.

Input:
race a car

Output:
no

Explanation:
"raceacar" is not a palindrome.