代码要点：倒序遍历，先算右侧再推左侧；栈内维护「右侧候选更大值」，单调递增（栈顶最小）。
腾讯元宝使用指南 图源：元宝官方
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A quadtree does the same thing for two-dimensional space. It takes a rectangular region and divides it into four equal quadrants: northwest, northeast, southwest, southeast. If a quadrant has too many points in it, it subdivides again and again. Each subdivision creates smaller and smaller cells where points are densely packed.
，更多细节参见爱思助手下载最新版本
if (chunks === null) {，这一点在雷电模拟器官方版本下载中也有详细论述
Butch Wilmore and Suni Williams have been on the ISS since June 2024