Given a word, print $\texttt{Yes}$ if it is a palindrome, otherwise $\texttt{No}$.

A palindrome is a word which reads the same backward as forward, e.g. racecar.

Input

The input will contain a string $S$ ($0 < \texttt{Length of S} < 100$).

$S$ will contain lowercase alphabets only.

Output

Print $\texttt{Yes}$ or $\texttt{No}$.

Samples

Input	Output
racecar	Yes

Input	Output
carrot	No