CA Loves Stick Time Limit: 2000/1000 MS (Java/Others)    Memory Limit: 262144/262144 K (Java/Others)Total Submission(s): 563    Accepted Submission(s): 202 Problem Description CA loves to play with sticks.One day he receives four pieces of sticks, he…

CA Loves Stick Time Limit: 2000/1000 MS (Java/Others)    Memory Limit: 262144/262144 K (Java/Others)Total Submission(s): 981    Accepted Submission(s): 332 Problem Description CA loves to play with sticks.One day he receives four pieces of sticks, he…

Problem Description 话说上回讲到海东集团推选老总的事情,最终的结果是XHD以微弱优势当选,从此以后,"徐队"的称呼逐渐被"徐总"所取代,海东集团(HDU)也算是名副其实了.创业是需要地盘的,HDU向钱江肉丝高新技术开发区申请一块用地,很快得到了批复,据说这是因为他们公司研发的"海东牌"老鼠药科技含量很高,预期将占全球一半以上的市场.政府划拨的这块用地是一个多边形,为了描述它,我们用逆时针方向的顶点序列来表示,我们很想了解这块地…

题目链接:https://cn.vjudge.net/problem/URAL-1963 题目大意:给你一个四边形的n个点,让你判断对称点的个数(对称轴的个数*2). 具体思路:感谢qyn的讲解,具体的判断过程如下,首先判断两条对角线是不合法的.对于当前的对角线,(x2,y2)与(x4,y4)形成的对角线,我们只需要判断第一个点与第四个点形成的距离和第三个点和第四个点形成的距离是不是相同的,以及第二个点与第一个点形成的距离和第三个点和第二个点形成的距离是不是相等就能判断出来了.第二条对角线的判断…

题目链接: http://acm.hdu.edu.cn/showproblem.php?pid=5656 CA Loves Stick Accepts: 381   Submissions: 3204 Time Limit: 2000/1000 MS (Java/Others)     Memory Limit: 262144/262144 K (Java/Others) 问题描述 CA喜欢玩木棍. 有一天他获得了四根木棍,他想知道用这些木棍能不能拼成一个四边形.(四边形定义:https://e…

2019 杭电多校 1 1013 题目链接:HDU 6590 比赛链接:2019 Multi-University Training Contest 1 Problem Description After returning with honour from ICPC(International Cat Programming Contest) World Finals, Tom decides to say goodbye to ICPC and start a new period of l…

题意:有n个学生,有m对人是认识的,每一对认识的人能分到一间房,问能否把n个学生分成两部分,每部分内的学生互不认识,而两部分之间的学生认识.如果可以分成两部分,就算出房间最多需要多少间,否则就输出No. 首先判断是否为二分图,然后判断最大匹配 Sample Input 4 4 1 2 1 3 1 4 2 3 6 5 1 2 1 3 1 4 2 5 3 6Sample Output No 3 #include<iostream> #include<string.h> #include…

题意:给你一个无向图,问你有没有可能存在一个奇环连接所有的节点. 分析:好久没写博客了,这个好习惯还是要继续保持的!这道题通过转化之后就是问你有没有存在一个奇环连接所有的节点,这里用到的方法是染色法,这是一个做题时的技巧,掌握好久ok了! 代码实现: #include<iostream> #include<cstdio> #include<cstring> #include<vector> #include<queue> using namesp…

Problem Description Write a program to determine whether a word is a palindrome. A palindrome is a sequence of characters that is identical to the string when the characters are placed in reverse order. For example, the following strings are palindro…

Problem Description Writea program to read in a list of integers and determine whether or not eachnumber is prime. A number, n, is prime if its only divisors are 1 and n. Forthis problem, the numbers 1 and 2 are not considered primes. Input Eachinput…