Palindrome#2162

Palindrome

1 second
128 megabytes
Very easy

A palindrome is a string that reads the same forwards and backwards. Determine whether the given text is a palindrome. Remember that spaces are ignored when reading.

Input

A string (|S| \leq 1000), consisting of lowercase Latin letters and spaces, is given. denotes the length of the string.

Output

Print "YES" if the text is a palindrome, and "NO" otherwise.

Examples

Example 1

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Example 2

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