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.
第五十七条 冒领、隐匿、毁弃、倒卖、私自开拆或者非法检查他人邮件、快件的，处警告或者一千元以下罚款；情节较重的，处五日以上十日以下拘留。
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_defineProperty(HTMLMediaElement.prototype, 'srcObject', {