题目大意: 给出三角形的三个顶点 再给一条绳(绳长不超过三角形周长) 求绳子在三角形中能围出的最大面积 题解链接 http://blog.sina.com.cn/s/blog_6a46cc3f0100tujn.html 多边形和圆 周长相同时 圆的面积更大 而当绳长超过三角形的内接圆时 沿着边放 对应三角的三个位置围成三段圆弧 使得三段圆弧能围成一个圆时 面积就能更大 而此时这个小圆也会与小三角形内接 与大圆和大三角形相似 计算比例 k=(小三角周长-小内接圆周长)/(大三角周长-大内接圆周长)…

Area in Triangle 博客原文地址:http://blog.csdn.net/xuechelingxiao/article/details/40707691 题目大意: 给你一个三角形的三边边长,给你一跟绳子的长度,将绳子放在三角形里围起来的面积最大是多少. 解题思路: 当然能够想到当绳子的长度十分长的时候,绳子能围城的最大面积就是三角形的面积. 当然还能够想到的是当绳子的长度比較短,小于三角形的内接圆的长度时,绳子能围城的面积就是绳子能围成的圆的面积. 那么剩下要计算的就是当绳子长…

Area in Triangle Time Limit: 1000MS   Memory Limit: 30000K Total Submissions: 1674   Accepted: 821 Description Given a triangle field and a rope of a certain length (Figure-1), you are required to use the rope to enclose a region within the field and…

  Time Limit: 1000MS   Memory Limit: 30000K Total Submissions: 1458   Accepted: 759 Description Given a triangle field and a rope of a certain length (Figure-1), you are required to use the rope to enclose a region within the field and make the regio…

Given a triangle field and a rope of a certain length (Figure-1), you are required to use the rope to enclose a region within the field and make the region as large as possible. Input The input has several sets of test data. Each set is one line cont…

link Description 给出三角形三边长,给出绳长,问绳在三角形内能围成的最大面积.保证绳长 \(\le\) 三角形周长. Solution 首先我们得知道,三角形的内切圆半径就是三角形面积 \(\times 2\) 除以三角形周长. 可以看出,如果绳长 \(\le\) 三角形内切圆周长,那么我们肯定是围成一个圆.否则,我们就会围成下图形状: 考虑计算面积: 可以发现的是图中所指出的形状相等,以及小三角形与大三角形相似.那么我们就可以联立方程,解出小圆的半径,然后就可以算了. Code…

Problem ATriangle Fun Input: Standard Input Output: Standard Output In the picture below you can see a triangle ABC. Point D, E and F divides the sides BC, CA and AB into ratio 1:2 respectively. That is CD=2BD, AE=2CE and BF=2AF. A, D; B, E and C, F…

链接: http://acm.zju.edu.cn/onlinejudge/showProblem.do?problemCode=1010 http://acm.hust.edu.cn/vjudge/contest/view.action?cid=29328#problem/B Area Time Limit: 2 Seconds       Memory Limit: 65536 KB       Special Judge Jerry, a middle school student, ad…

Triangle 一个二维高质量网格(mesh)生成器和Delaunay三角化工具. PSLG(Planar Straight Line Graph)约束Delaunay三角网(CDT)与Delaunay三角网相似, 除了PSLG线段在CDT中表示为一条边. .poly文件格式 First line: <# of vertices> <dimension (must be 2)> <# of attributes> <# of boundary markers (…

ZOJ Problem Set - 1010 Area Time Limit: 2 Seconds      Memory Limit: 65536 KB      Special Judge Jerry, a middle school student, addicts himself to mathematical research. Maybe the problems he has thought are really too easy to an expert. But as an a…