Palindromes are awesome. Today we are going to code a palindrome checker.
A palindrome is a word that will be the same when read from backwards.
For example: did is a palindrome but cat is not.
For more information, refer to Wikipedia.
The input will be a single word, without spaces, to check whether its palindrome.
The word provided in the test cases will be less than or equal to 1000000 characters long.
Print "Yes" or "No" depending whether the word is a palindrome, case insensistive.
Sample Input 1
Sample Output 1
Sample Input 2
Sample Output 2
Sample Input 3
Sample Output 3
Sample Input 4
Sample Output 4