The algorithm maintains a running "best distance" that starts at infinity. As it walks the tree, it checks each visited point and updates the best distance if it finds something closer. Before recursing into a child node, it checks whether the closest possible point in that child's bounding box is farther than the current best. If so, the entire subtree gets pruned.
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这一战略转向的具体体现，便是主动加速关店、出清低效物业，华住2025年关店超过300家，亚朵亦关闭超过200家，持续淘汰位置不佳、业绩持续低于阈值（如RevPAR低于区域阈值20%）的门店。
。关于这个话题，51吃瓜提供了深入分析
// 入栈后栈仍保持单调递增（因为小的都被弹走了）。91视频对此有专业解读
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