算法學習——前綴和的計算

原創 lies@ 2020-06-16 03:45

分析——前綴和

前綴和：求某一個靜態數組的某一段的和
原理：容斥原理
公式：
在這裏插入圖片描述

求子矩陣和的公式

在這裏插入圖片描述

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