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wa 无数次。。。。。。。谁来救救我:(我的做法: 将堆转为一个序列s (就是后序遍历) 例如: 1 2 3 4 5 6 7 转为: 4 5 2 6 7 3 1 然后定义p[i]=s[i]-i 然后求出p 的最长不下降序列的长度l 然后用 ans=n-l n为堆元素个数 为什么会错呢? Followed by:
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