Consider a rooted tree. A rooted tree has one special vertex called the root. All edges are directed from the root. Vertex u is called a child of vertex v and vertex v is called a parent of vertex u if there exists a directed edge from v to u. A vert…

Consider a rooted tree. A rooted tree has one special vertex called the root. All edges are directed from the root. Vertex u is called a child of vertex v and vertex v is called a parent of vertex u if there exists a directed edge from v to u. A vert…

[链接] 我是链接,点我呀:) [题意] 在这里输入题意 [题解] 写个dfs看看是不是每个节点都有3个叶子节点就可以了. [代码] #include <bits/stdc++.h> using namespace std; const int N = 1e3; int n; vector <int> g[N+10]; bool ok = true; int dfs(int x){ if ((int) g[x].size()==0){ return 1; } int len = g…

A. Modular Exponentiation time limit per test 1 second memory limit per test 256 megabytes input standard input output standard output The following problem is well-known: given integers n and m, calculate , where 2n = 2·2·...·2 (n factors), and  den…

今天有同事问我下面这段代码是什么意思: var MyClass = function() { events.EventEmitter.call(this); // 这行是什么意思? }; util.inherits(MyClass, events.EventEmitter); // 还有这行? 我也不是很明白,于是研究了一下.下面是我的一些体会. Christmas Trees和Errors 如果你写过JavaScript或NodeJS代码,你也许会对callback地狱深有体会.每次当你进行异…

Father Christmas flymouse Time Limit: 1000MS   Memory Limit: 131072K Total Submissions: 3241   Accepted: 1099 Description After retirement as contestant from WHU ACM Team, flymouse volunteered to do the odds and ends such as cleaning out the computer…

Father Christmas flymouse Time Limit: 1000MS Memory Limit: 131072K Description After retirement as contestant from WHU ACM Team, flymouse volunteered to do the odds and ends such as cleaning out the computer lab for training as extension of his contr…

Big Christmas Tree Time Limit: 3000MS   Memory Limit: 131072K Total Submissions: 23387   Accepted: 5063 Description Christmas is coming to KCM city. Suby the loyal civilian in KCM city is preparing a big neat Christmas tree. The simple structure of t…

http://poj.org/problem?id=3013 Big Christmas Tree Time Limit: 3000MS   Memory Limit: 131072K Total Submissions: 19009   Accepted: 4048 Description Christmas is coming to KCM city. Suby the loyal civilian in KCM city is preparing a big neat Christmas…

Big Christmas Tree 题意:图中每个节点和边都有权值,图中找出一颗树,树根为1使得 Σ(树中的节点到树根的距离)*(以该节点为子树的所有节点的权值之和) 结果最小: 分析:直接求出每个节点到树根的最短距离距离,之后乘上自身节点的权值求和即可: ps:注意特判v = 0:这时cnt = 1 > v; Djistra + priority_queue //Accepted 2804K 141MS #include <cstdio> #include <cstring&g…

[题目] Description Harry and Sally were playing games at Christmas Eve. They drew some Christmas trees on a paper: Then they took turns to cut a branch of a tree, and removed the part of the tree which had already not connected with the root. A step sh…

Christmas Game Time Limit: 1000MS   Memory Limit: 65536K Total Submissions: 1967   Accepted: 613 Description Harry and Sally were playing games at Christmas Eve. They drew some Christmas trees on a paper: Then they took turns to cut a branch of a tre…

POJ 3013 Big Christmas Tree(最短路Dijkstra+优先队列优化,SPFA) ACM 题目地址:POJ 3013 题意:  圣诞树是由n个节点和e个边构成的,点编号1-n.树根为编号1,选择一些边.使得全部节点构成一棵树.选择边的代价是(子孙的点的重量)×(这条边的价值). 求代价最小多少. 分析:  单看每一个点被计算过的代价,非常明显就是从根到节点的边的价值.所以这是个简单的单源最短路问题. 只是坑点还是非常多的. 点的数量高达5w个,用矩阵存不行.仅仅能用边存.…

Big Christmas Tree 题目分析: 叫你构造一颗圣诞树,使得 (sum of weights of all descendant nodes) × (unit price of the edge)尽量的小.转换后就是求根节点到每一个节点的距离最短,也就是最短路. 生成树可能会超时.我没试过.然后,求解最短路要用优化的解法不然会超时.最后的答案就是:sum = w[1] * dist[1] + w[2] * dist[2] + ..... w[n] * dist[n].能够自己推推例…

Big Christmas Tree Time Limit: 3000MS   Memory Limit: 131072K Total Submissions: 20974   Accepted: 4535 Description Christmas is coming to KCM city. Suby the loyal civilian in KCM city is preparing a big neat Christmas tree. The simple structure of t…

Big Christmas Tree Time Limit: 3000MS   Memory Limit: 131072K Total Submissions: 25823   Accepted: 5577 Description Christmas is coming to KCM city. Suby the loyal civilian in KCM city is preparing a big neat Christmas tree. The simple structure of t…

D - Christmas Time limit : 2sec / Memory limit : 1024MB Score : 400 points Problem Statement In some other world, today is Christmas. Mr. Takaha decides to make a multi-dimensional burger in his party. A level-L burger (L is an integer greater than o…

来源poj3160 After retirement as contestant from WHU ACM Team, flymouse volunteered to do the odds and ends such as cleaning out the computer lab for training as extension of his contribution to the team. When Christmas came, flymouse played Father Chri…

Last Christmas填 词:乔治·迈克尔谱 曲:乔治·迈克尔编 曲:乔治·迈克尔歌词:Last Christmas I gave you my heart去年的圣诞节,我把心给了你But the very next day you gave it away但隔天你就将它丢弃This year to save me from tears今年,我在泪水中重新振作I'll give it to someone special我会把心交给一个特别的人Last Christmas I gave y…

Description My kid's kindergarten class is putting up a Christmas play.  (I hope he gets the lead role.)  The kids are all excited, but the teacher has a lot of work.  She has to produce costumes for a scene with K soldiers.  She wants to buy all the…

Father Christmas flymouse Time Limit: 1000MS   Memory Limit: 131072K Total Submissions: 3007   Accepted: 1021 Description After retirement as contestant from WHU ACM Team, flymouse volunteered to do the odds and ends such as cleaning out the computer…

shit antd & Merry Christmas bug https://github.com/ant-design/ant-design/issues/13098 antd 玩大了? https://zhuanlan.zhihu.com/p/45072819 https://zhuanlan.zhihu.com/p/53214213 https://github.com/ant-design/ant-design/issues/13819 还要点 face 吗?这是开源库,好多人都因为你…

D - Christmas Time limit : 2sec / Memory limit : 1024MB Score : 400 points Problem Statement In some other world, today is Christmas. Mr. Takaha decides to make a multi-dimensional burger in his party. A level-L burger (L is an integer greater than o…

Family Gathering at Christmas 时间限制: 1 Sec  内存限制: 128 MB提交: 13  解决: 4[提交] [状态] [讨论版] [命题人:admin] 题目描述 Every year, Alice’s family has a gathering at Christmas, at a family member’s place. The members would like to choose a host so that every member can…

Father Christmas flymouse Time Limit: 1000MS   Memory Limit: 131072K Total Submissions: 3479   Accepted: 1185 Description After retirement as contestant from WHU ACM Team, flymouse volunteered to do the odds and ends such as cleaning out the computer…

Father Christmas flymouse Time Limit: 1000MS Memory Limit: 131072K Description After retirement as contestant from WHU ACM Team, flymouse volunteered to do the odds and ends such as cleaning out the computer lab for training as extension of his contr…

Merry Christmas Time Limit : 8 sec, Memory Limit : 65536 KB Problem J: Merry Christmas International Christmas Present Company (ICPC) is a company to employ Santa and deliver presents on Christmas. Many parents request ICPC to deliver presents to the…

1. 简介 截止到上一篇文章为止,框架基本完全搭建完成.那么今天我们要做什么呢????聪明如你的小伙伴或者是童鞋一定已经猜到了,都测试完了,当然是要生成一份高端大气上档次的测试报告了.没错的,今天宏哥就带领你们将这部分内容也集成到这个框架中.本文来介绍如何生成自动化测试报告,前面文章尾部提到了利用HTMLTestRunner.py来生成自动化测试报告.关于HTMLTestRunner不过多介绍,只需要知道是一个能生成一个HTML格式的网页报告就可以,其他的如果你特别感兴趣可以自己去搜索查询资料.…

题目传送门. 分析 根据题目,我们可以发现要求如下: \(d\)的值 输出 \(d=25\) Christmas \(d=24\) Christmas Eve \(d=23\) Christmas Eve Eve \(d=22\) Christmas Eve Eve Eve 因此,我们只需要使用\(4\)个if语句解决即可. 解题步骤 定义变量\(d\),并输入. int d; cin>>d; 使用\(4\)个if语句判断\(d\)的值,并输出对应的内容. if(d==25)cout<&…

LED Christmas lights are not very cheap, but you should know that LED lights can be used for more than 10 years. In this case, this may be a good buying option, especially for those who are not used to moving houses every few years. First, calculate…