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.
МИД России вызвал посла Нидерландов20:44
刚刚过去的春节，消费方面的新变化，让很多人感受到了上海的城市活力。“刚刚过去的马年春节，我们上海出现了一个新’年俗’，叫’反向过年’。”全国人大代表、上海广播电视台、上海文化广播影视集团有限公司融媒体中心主持人（首席）印海蓉回忆。她说，春节期间，大批在上海工作安家的“新上海人”，都把外地的亲人接来上海过年。上海从传统的客流输出地变成了热门的团圆目的地。印海蓉认为，这样的合家欢背后，其实是我们上海优质文旅产品的持续输出和文旅服务的持续升级。”，推荐阅读体育直播获取更多信息
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