Geometry Problem HDU - 6242 Alice is interesting in computation geometry problem recently. She found a interesting problem and solved it easily. Now she will give this problem to you : You are given NN distinct points (Xi,Yi)(Xi,Yi) on the two-dimens…

Geometry Problem Time Limit: 2000/1000 MS (Java/Others)    Memory Limit: 262144/262144 K (Java/Others)Total Submission(s): 1722    Accepted Submission(s): 304Special Judge Problem Description Alice is interesting in computation geometry problem recen…

题目链接:http://acm.hdu.edu.cn/showproblem.php?pid=6242 思路:当 n == 1 时 任取一点 p 作为圆心即可. n >= 2 && n < 5 时 此时有可能出现所有点共线,所以取任意俩点间中点作为圆的圆心. n >= 5 保证了有解.所以不可能有所有点共线的情况,随机取三个点在正解圆上的概率是 1/8,还是蛮大的.... 外学了下随机算法的写法....时间种子 time(0)要强制转成int,不然会WA,不造为啥....…

You can Solve a Geometry Problem too Time Limit: 2000/1000 MS (Java/Others)    Memory Limit: 65536/32768 K (Java/Others)Total Submission(s): 6932    Accepted Submission(s): 3350 Problem Description Many geometry(几何)problems were designed in the ACM/I…

ACM-ICPC Live Archive 又是搞了一个晚上啊!!! 总算是得到一个教训,误差总是会有的,不过需要用方法排除误差.想这题才几分钟,敲这题才半个钟,debug就用了一个晚上了!TAT 有一定几何基础的很容易想到这里的碰撞一定是其中一个顶点撞到另一个三角形的边上,于是就可以暴力枚举每一个顶点的最先碰撞的时间.注意的是,求直线相交以后,判交点是否在线段内,对于1e7的数据,千万不要判点在线上!TAT 因为已经知道是交点了,只要判断是不是在两点之间就好了. 代码如下:(把onseg改少了…

Alice is interesting in computation geometry problem recently. She found a interesting problem and solved it easily. Now she will give this problem to you : You are given NN distinct points (Xi,Yi)(Xi,Yi) on the two-dimensional plane. Your task is to…

You can Solve a Geometry Problem too Time Limit: 2000/1000 MS (Java/Others) Memory Limit: 65536/32768 K (Java/Others)Total Submission(s): 6837 Accepted Submission(s): 3303 Problem Description Many geometry(几何)problems were designed in the ACM/ICPC. A…

You can Solve a Geometry Problem too Time Limit: 2000/1000 MS (Java/Others)    Memory Limit: 65536/32768 K (Java/Others)Total Submission(s): 10204    Accepted Submission(s): 5042 Problem Description Many geometry(几何)problems were designed in the ACM/…

称号: You can Solve a Geometry Problem too Time Limit: 2000/1000 MS (Java/Others) Memory Limit: 65536/32768 K (Java/Others) Total Submission(s): 145 Accepted Submission(s): 100   Problem Description Many geometry(几何)problems were designed in the ACM/IC…

pid=1086">You can Solve a Geometry Problem too Time Limit: 2000/1000 MS (Java/Others)    Memory Limit: 65536/32768 K (Java/Others) Total Submission(s): 6997    Accepted Submission(s): 3385 Problem Description Many geometry(几何)problems were designe…