This is the same idea behind binary search. In a sorted array, you compare against the middle element and eliminate half the remaining candidates. In a quadtree, you choose one of four quadrants and ignore the other three regions. Each level narrows the search space by a factor of four instead of two.
牛刀小结曾经的 “东北药茅”，用十年时间缔造神话，却用四年时间把一手好牌打得稀烂。
，这一点在91视频中也有详细论述
In Jersey, Trudi Roscouet also created another business aiming to raise awareness of women's health and offer support after she experienced the menopause at the age of 51.
第三十八条 非法携带枪支、弹药或者弩、匕首等国家规定的管制器具的，处五日以下拘留，可以并处一千元以下罚款；情节较轻的，处警告或者五百元以下罚款。