昨日，vivo 正式宣布将参展 2026 年世界移动通信大会（MWC 2026）。
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system may not be able to handle complex tasks
For well-distributed points, nearest neighbor search is often near O(logn)O(\log n)O(logn) in practice. In the worst case (all points clustered tightly or along a line), it can degrade to O(n)O(n)O(n), but this is uncommon with typical spatial data.