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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Subina Shrestha,BBC Eye Investigationsand。关于这个话题，WPS下载最新地址提供了深入分析
“逢年过节、日常有困难时多联系，才能真正做到早发现、早干预、早帮扶，牢牢守住不发生规模性返贫致贫底线。”他说。
The streamers who spoke to the BBC say something must be done to protect children on Discord - but it shouldn't be at the cost of other users' sensitive information.