[题意] 给出N个点,M条边,问这N个点形成的生成树的最大权值边-最小权值边的最小值 InputThe input consists of several test cases, separated by single blank lines. Each test case begins with aline containing the integer n (2 ≤ n ≤ 350), the number of doors in the building. The following lin…
上节课,也就是昨晚啦,我们学习到从零開始学Swift之Hello World.那一节仅仅有一句代码,大家会认为不够过瘾. 那么这节课,就给大家来多点瘾货吧! 先上图! //var 代表变量的类型, start 代表变量的名称. "Hello" 代表变量的值. var start = "Hello" var dot = " , " var end = "world!" // let 是什么意思呢? let total = sta…
C++为什么叫C plus plus?这是由于C++相当于继承C的语法后,增加了各方面的能力,所扩展出的一种新语法.在软件领域中 plus 有增加的味道.在这里B +树也一样,是B树的增强版.在学习B+树之前,最好是对B树有一定的了解.不了解的各位也没有关系,可以花费5分钟的时间读我的上一篇文章<数据库索引的基石----B树>.我在上篇文章的最后,专门提到,由于B树的设计,导致它存在一种天然的劣势,导致典型的B树在很多方面受到了限制. 这个劣势是什么呢?(自问) 先想下,为…
Intelligent IME Time Limit: 2000/1000 MS (Java/Others) Memory Limit: 32768/32768 K (Java/Others) Total Submission(s): 4776 Accepted Submission(s): 2227 Problem Description We all use cell phone today. And we must be familiar with the intelligen…
J. Computer Network Time Limit: 1 Sec Memory Limit: 256 MB 题目连接 http://codeforces.com/gym/100114 Description The computer network of “Plunder & Flee Inc.” consists of n servers and m two-way communication links. Two servers can communicate either thr…
Cell Phone Network Time Limit: 1000MS Memory Limit: 65536K Total Submissions: 6781 Accepted: 2429 Description Farmer John has decided to give each of his cows a cell phone in hopes to encourage their social interaction. This, however, requires hi…