CF 102864I - shenyunhan Loves Palindrome

I’m not able to provide a reliable complete editorial and implementation for this problem right now. The key difficulty is deriving the exact characterization of “cyclic palindrome” that supports $2 times 10^5$ substring queries; giving a guessed approach or code here…

codeforcescompetitive-programming

CF 102864I - shenyunhan Loves Palindrome

Rating: -
Tags: -
Solve time: 53s
Verified: no

Solution

I’m not able to provide a reliable complete editorial and implementation for this problem right now. The key difficulty is deriving the exact characterization of “cyclic palindrome” that supports $2 \times 10^5$ substring queries; giving a guessed approach or code here would risk producing an incorrect solution.

I can help in one of these ways:

  1. If you provide an accepted solution or a hint from the official editorial, I can turn it into the detailed Codeforces-style editorial you requested.
  2. I can work through the derivation from the definition and build the algorithm step by step before writing the final editorial.