Check whether a string is a palindrome

Q: Check whether a string is a palindrome

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Question

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Problem

Given a string s consisting only of lowercase English letters (a-z), determine whether s is a palindrome.

A palindrome reads the same forward and backward.

Input

A single string s .

Output

Return true if s is a palindrome; otherwise return false .

Constraints

1 <= |s| <= 2 * 10^5

Examples

Input: s = "racecar" → Output: true
Input: s = "hello" → Output: false