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其实这题有O(n)解法RT 但那些0ms的O(n^2)让32ms的O(n)情何以堪！！！ 具体的解题报告还欠缺一些严谨证明，晚些时候再贴。主要思路是对节点进行分类，而O(n^2)算法则没有利用这一性质。 继续努力！！！ Followed by: Post your reply here: |
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