Citadel / Citadel Securities

Refactor Obfuscated C++ Code (Hidden Best-Time-To-Buy-Sell)

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Citadel OA round: a 30+ line C++ function `root_node(std::vector<int> output)` packed with red-herring variables, `std::pow`, `std::distance`, bit-shift tricks, and constexpr noise. The task is to rea...