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Problem
Determine if an array reads the same forwards and backwards.
Input format
Input
input.txt
- An integer N (1 ≤ N ≤ 100) - N integers
Output format
Output
output.txt
- "YES" if it is a palindrome, "NO" otherwise.
Example
input
5 1 2 3 2 1
output
YES
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Sample cases (from the problem)
Sample Case 1
Input
5 1 2 3 2 1
Expected output
YES
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