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为什么按区间左值从小到大排序,再进行合并就是最优?

Posted by flash_knight at 2018-03-18 14:28:06 on Problem 1328
为什么按区间左值从小到大排序,再进行合并就是最优,我认为要区间的中心距离最近的点,优先合并区间才是最优,麻烦神犇告知一下

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