p03631 AtCoder Beginner Contest 070 - Palindromic Number
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`.

Examples

Input

575


Output

Yes


Input

123


Output

No


Input

812


Output

No
```python
N = input()

print('Yes' if N == N[-1::-1] else 'No')
```