Problem Statement

You are given a three-digit positive integer $N$. Determine whether $N$ is a palindromic number. Here, a palindromic number is an integer that reads the same backward as forward in decimal notation.

Constraints

• $100≤N≤999$
• $N$ is an integer.

Input

Input is given from Standard Input in the following format:

N

Output

If $N$ is a palindromic number, print Yes; otherwise, print No.