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.
is vague enough that I cannot give a definitive reason for its limited success,，详情可参考搜狗输入法2026
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一个经济学家可以指出方向，却无法替代制度本身。真正决定一个国家命运的，从来不是某一次任命，而是这个国家能否建立并维持一套让企业家敢于投资、让民众相信规则的制度体系。秘鲁的未来，最终取决于此。
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