$g$是积性函数,可以通过分解质因数在$O(n\log n \log\log n)$的时间内求出. 对于$((A\times B)\times C)\times D$,可以转化为$D\times (C\times (B\times A))$,并视向量个数的奇偶性取反答案. 对于$D\times (C\times (B\times A))$,可以将$D\times$,$C\times$,$B\times$用$3$个$3\times 3$的矩阵表示,然后对树进行点分治即可. 时间复杂度$O(n\lo…

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这个资料关于分布式系统资料,作者写的太好了.拿过来以备用 网址:https://github.com/ty4z2008/Qix/blob/master/ds.md 希望转载的朋友,你可以不用联系我．但是一定要保留原文链接,因为这个项目还在继续也在不定期更新．希望看到文章的朋友能够学到更多． <Reconfigurable Distributed Storage for Dynamic Networks> 介绍:这是一篇介绍在动态网络里面实现分布式系统重构的paper.论文的作者(导师)是MIT…

作者:廖君链接:https://www.zhihu.com/question/19868791/answer/88873783来源:知乎 分布式系统(Distributed System)资料 <Reconfigurable Distributed Storage for Dynamic Networks> 介绍:这是一篇介绍在动态网络里面实现分布式系统重构的paper.论文的作者(导师)是MIT读博的时候是做分布式系统的研究的,现在在NUS带学生,不仅仅是分布式系统,还有无线网络.如果感兴趣…

Tempter of the Bone Problem Description The doggie found a bone in an ancient maze, which fascinated him a lot. However, when he picked it up, the maze began to shake, and the doggie could feel the ground sinking. He realized that the bone was a trap…

如何拿到Source:从SQL,从XML file SQL:一个是ObjectDataProvider //用linq方法拿到SQL data,wrap到一个IEnumerable<Customer> public IEnumerable<Customer> GetAllCustomersAsList() { var items = from cust in this.Customers orderby cust.LastName select cust; return items…

#瓦登尔湖词频统计: import string path = 'D:/python3/Walden.txt' with open(path,'r',encoding= 'utf-8') as text: words = [raw_word.strip(string.punctuation).lower() for raw_word in text.read().split()] words_index = set(words) counts_dict = {index:words.count(…

创建版本库 什么是版本库呢?版本库又名仓库,英文名repository,你可以简单理解成一个目录,这个目录里面的所有文件都可以被Git管理起来,每个文件的修改.删除,Git都能跟踪,以便任何时刻都可以追踪历史,或者在将来某个时刻可以“还原”. 所以,创建一个版本库非常简单,首先,选择一个合适的地方,创建一个空目录: $ mkdir learngit $ cd learngit $ pwd /Users/michael/learngit pwd命令用于显示当前目录.在我的Mac上,这个仓库位于/U…

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Tempter of the Bone Time Limit: 2000/1000 MS (Java/Others)    Memory Limit: 65536/32768 K (Java/Others) Total Submission(s): 55812    Accepted Submission(s): 15052 Problem Description The doggie found a bone in an ancient maze, which fascinated him a…