先枚举$d=\gcd$,然后暴力枚举所有$d$的倍数,相当于求出若干个数中最大的互素对 假设选出的数依从大到小排序后为$a_{i}$,令$g_{i}=\min_{(a_{i},a_{j})=1}j$,则答案为$\max a_{i}\cdot a_{g_{i}}$ 考虑一种比较奇怪的计算$g_{i}$的方式,先求出$tot=\sum_{j=1}^{n}[(a_{i},a_{j})=1]$,然后从$n$到1依次删除,直到删除的数中与$a_{i}$互素的数达到了$tot$个 关于$tot$的计算可以用…

// the parent constructor function Parent(name) { this.name = name || 'Adam'; } // adding functionality to the prototype Parent.prototype.say = function () { return this.name; }; // empty child constructor function Child(name) {} inherit(Child, Paren…

quanben's definition of classical music is a definition formed by the following aspects, 1. music written to seriously express, reflect and/or just indicate a certain set of emotions, feelings, notions, and/or just melodical/musical motives/requireme…

JavaScript is a class-free, object-oriented language, and as such, it uses prototypal inheritance instead of classical inheritance. This can be puzzling to programmers trained in conventional object-oriented languages like C++ and Java. JavaScript's…

博文结构图如下: 一.环境描述以及注意事项 1.1 环境简介 IP 系统 Oracle版本 OGG版本 源端 172.16.10.16/36 RHEL6.5 oracle11204 12.1 目标端 172.16.10.154 RHEL6.5 oracle11204 12.1 同步用户为:hr. 1.2 OGG网络带宽规划 GoldenGate数据同步所需的网络带宽是目前各种技术中最低的,复制全库数据时,通常GoldenGate队列文件大小与数据库日志大小的比例为1:4,GoldenGate网络…

Frequently Asked Questions - Circus 0.15.0 documentation https://circus.readthedocs.io/en/latest/faq/#whycircussockets Here is a list of frequently asked questions about Circus: How does Circus stack compare to a classical stack? In a classical WSGI…

In Java you could do something like: Person adam = new Person(); In JavaScript you would do: var adam = new Person(); JavaScript’s constructor invocation looks as if Person were a class, but it’s important to keep in mind that Person is still just a…

1. Die Zauberflöte ("The Magic Flute"), K. 620: Overture London Philharmonic Orchestra 7:28 [奥地利]莫扎特<魔笛> 序曲(overture)2. Suite for Orchestra No. 3 in D Major, BWV 1068: II. Air Royal Philharmonic Orchestra 3:25 巴赫<G弦上的咏叹调>(D大调第三序曲, BW…

Find any position of a target number in a sorted array. Return -1 if target does not exist. 与题目 First Position of Target 相同 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 public class Solution {     /**      * @param nums: An integer array …

PCA principal components analysis kmeans bayes spectral clustering svm EM hidden Markov models deep learning Spark…