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.
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Brute forcing all substrings in \mathcal{O}(N^3) is sufficient to pass. A more efficient approach would be to use Manacher's Algorithm, which runs in \mathcal{O}(N).

Time Complexity: \mathcal{O}(N^3) or \mathcal{O}(N).


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