Editorial for CCC '16 J3 - Hidden Palindrome


Remember to use this editorial only when stuck, and not to copy-paste code from it. Please be respectful to the problem author and editorialist.
Submitting an official solution before solving the problem yourself is a bannable offence.

Brute forcing all substrings in O(N3) is sufficient to pass. A more efficient approach would be to use Manacher's Algorithm, which runs in O(N).

Time Complexity: O(N3) or O(N).


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