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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我們需要對AI機器人保持禮貌嗎？
These aren't contrived scenarios invented by test authors in total vacuum. They're consequences of the spec's design and reflect real world bugs.
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The Taliban government repeatedly maintains that its territory is not being used to threaten the security of any country, and that Pakistan's actions in Afghanistan are "unprovoked".
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