Last Updated
：2025/12/05
Fenwick tree
Noun
Japanese Meaning
コンピュータサイエンスにおける、数値リストの前計算和（累積和）の動的更新と問い合わせを対数時間で可能にするデータ構造。 / バイナリインデックスツリーとも呼ばれ、範囲和クエリや単一要素の更新が高速に行えるアルゴリズムの基盤となるデータ構造。
（ plural ）
Quizzes for review
(computer science) A data structure that maintains prefix sums over a list of numbers while allowing dynamic updates and queries in logarithmic time.
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Fenwick tree
To speed up range-sum queries during the competition, I implemented a Fenwick tree to support dynamic updates and prefix-sum queries in logarithmic time.
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To speed up range-sum queries during the competition, I implemented a Fenwick tree to support dynamic updates and prefix-sum queries in logarithmic time.
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