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.
Started with a patch#
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Автолюбителей предупредили о штрафе за неправильную тонировку14:52。PDF资料对此有专业解读
听闻一桩事：某人在网上对他人点名道姓批骂，之前还有所克制，后来见人没有回应，他胆子壮大了，连篇累牍，捏造事实，什么话伤人，就拣什么话来骂。没想到，人家一纸诉状给告了，某人便急了，急忙去求情，请人宽容：大人不记小人过。那模样，全然没有了当初网骂的嚣张气焰。