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.

Input

Input is given from Standard Input in the following format:
N

Output

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

Constraints

• 100≤N≤999
• N is an integer.

Sample Input 1

575

Sample Output 1

Yes

N=575 is also 575 when read backward, so it is a palindromic number. You should print Yes.

Sample Input 2

123

Sample Output 2

No

N=123 becomes 321 when read backward, so it is not a palindromic number. You should print No.

Sample Input 3

812

Sample Output 3

No

见题面 Input 部分

见题面 Output 部分