算法学习——前缀和的计算

原創 lies@ 2020-06-16 03:45

分析——前缀和

前缀和：求某一个静态数组的某一段的和
原理：容斥原理
公式：
在这里插入图片描述

求子矩阵和的公式

在这里插入图片描述

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