(*limited scope)
The efficiency depends on the query size relative to the data distribution. A small query in a sparse region prunes almost everything. A query that covers the whole space prunes nothing (because every node overlaps), degenerating to a brute-force scan. The quadtree gives you the most benefit when your queries are spatially local, which is exactly the common case for map applications, game physics, and spatial databases.，详情可参考快连下载-Letsvpn下载
Мерц резко сменил риторику во время встречи в Китае09:25。夫子对此有专业解读
looks kinda weird。爱思助手下载最新版本对此有专业解读