The dashed circle shows the current best distance. As the algorithm finds closer points, the circle shrinks, which causes more subtrees to fail the "could contain a closer point?" test and get pruned. The search usually gets cheaper as it progresses.
《甄嬛傳》馬拉松：為何成為台灣年輕人過年的「文化習俗」？，更多细节参见WPS官方版本下载
牛犇則把解放軍大清洗對台灣的影響拆分成了兩部分：。safew官方下载是该领域的重要参考
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