http://www.elijahqi.win/2018/02/19/bzoj2097/ ‎ 题目描述 Farmer John continues his never-ending quest to keep the cows fit by having them exercise on various cow paths that run through the pastures. These cow paths can be represented as a set of vertices…

Description 给出一棵树&#xff0c;N(2 < N < 100,000)个结点。每条边的长度为1。最多删掉树上的S(1 < S < N-1)条边,将树分割成S1块,使得所有块的最长链的最大值最小。 Input 第1行&#xff1a;2个整数&#xff0c;N和S　　接下来N-1行&#xff0c;每行2个整数&a…

【题目描述】 农夫让奶牛们在牧场之间奔跑以保持健康。这些牧场的布局是一棵树&#xff0c;且每条边等长度都为1。 对于给定的一个路径集合&#xff0c;精明的奶牛们会计算出任意点对路径的最大值&#xff0c;我们称之为这个路径集合的直径。 农夫把每个点标记为1~V(2 < V &…

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这题一眼看上去十分的吓人 于是我决定写一个暴力然后过了…奇妙 首先看到所求的最大值最小&#xff0c;我们能确定肯定用二分 但是如何保证森林里的最大直径小于所二分的值呢 我们按照天天爱跑步的存边长度方式&#xff0c;树上链的形成 分为两种 1、该点子节点的子链的最大值…

[USACO10DEC]牛的健美操Cow Calisthenics 题目描述 Farmer John continues his never-ending quest to keep the cows fit by having them exercise on various cow paths that run through the pastures. These cow paths can be represented as a set of vertices connecte…

题目描述 Farmer John continues his never-ending quest to keep the cows fit by having them exercise on various cow paths that run through the pastures. These cow paths can be represented as a set of vertices connected with bidirectional edges so that each p…

有需要的同学&#xff0c;源代码和配套文档领取&#xff0c;加文章最下方的名片哦 一、项目演示 项目演示视频 二、资料介绍 完整源代码&#xff08;前后端源代码SQL脚本&#xff09;配套文档&#xff08;LWPPT开题报告&#xff09;远程调试控屏包运行 三、技术介绍 Java…