Palindrome Linkedlist

easy
Given a singly linked list of Integers, determine it is a palindrome or not.

Input Format

1->2->3->4->3->2->1->null 1->2->3->4->2->1->null

Output Format

true false

Constraints

0 <= N <= 10^6

Notice

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Example

Input
10
5
1
4
6
9
9
6
4
1
5
Output
true
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