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.
Tehran residents say the Iranian capital has endured what they described as its worst night of aerial bombardment, as the US defense secretary, Pete Hegseth, followed Donald Trump’s suggestion on Monday the war could soon be over with a warning of more strikes to come.，这一点在新收录的资料中也有详细论述
南方周末：你提到过，银发经济虽然潜力巨大，但面临“叫好不叫座”的问题，核心难点是供需错配、支付能力不足以及人才短缺。这些难点因何出现？。新收录的资料对此有专业解读
It is very easy to catch, especially if you've never had it before.。关于这个话题，新收录的资料提供了深入分析