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.
国内文旅产业业的未来增长极，在广阔的三四线城市及县域。这里蕴藏着最独特的自然景观与最原真的文化体验，却长期受困于数字鸿沟，成为“沉睡的宝藏”。线上能见度低、产品信息简陋、服务标准不一、支付方式受限，让再浓郁的酒香也很难飘出深巷。，推荐阅读旺商聊官方下载获取更多信息
63-летняя Деми Мур вышла в свет с неожиданной стрижкой17:54。业内人士推荐im钱包官方下载作为进阶阅读
Norfolk Museums Service