Москвичи пожаловались на зловонную квартиру-свалку с телами животных и тараканами18:04
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.
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business process of a large customer.。关于这个话题，safew官方版本下载提供了深入分析
This story was originally featured on Fortune.com。safew官方下载对此有专业解读