题目链接 最小圆覆盖 并不知道为什么是O(n)的,而且要随机化点的顺序 #include<algorithm> #include<iostream> #include<cstdlib> #include<cstring> #include<cstdio> #include<string> #include<cmath> #include<ctime> #include<queue> #include…

题目链接:http://acm.hdu.edu.cn/showproblem.php?pid=3007 Each person had do something foolish along with his or her growth.But,when he or she did this that time,they could not predict that this thing is a mistake and they will want this thing would rather…

Problem Description Each person had do something foolish along with his or her growth.But,when he or she did this that time,they could not predict that this thing is a mistake and they will want this thing would rather not happened.The world king Sco…

1. 题目描述有n个点,求能覆盖这n个点的半径最小的圆的圆心及半径. 2. 基本思路算法模板http://soft.cs.tsinghua.edu.cn/blog/?q=node/1066定义Di表示相对于P[1]和P[i]组成的最小覆盖圆,如果P[2..i-1]都在这个圆内,那么当前的圆心和半径即为最优解.如果P[j]不在这个圆内,那么P[j]一定在新的最小覆盖圆的边界上即P[1].P[j].P[i]组成的圆.因为三点可以确定一个圆,因此只需要不断的找到不满足的P[j],进而更新最优解即可.其…

题意:给出n个点,求最小包围圆. 解法:这两天一直在学这个神奇的随机增量算法……看了这个http://soft.cs.tsinghua.edu.cn/blog/?q=node/1066之后自己写了好久一直写不对……后来在计算几何的模板上找到了…………orz膜拜一下 代码: #include<stdio.h> #include<iostream> #include<algorithm> #include<string> #include<string.h…

大致题意: 平面上有n个点,求一个最小的圆覆盖住所有点 最小覆盖圆裸题 学习了一波最小覆盖圆算法 #include<cstdio> #include<iostream> #include<cstring> #include<algorithm> #include<queue> #include<set> #include<map> #include<stack> #include<time.h> #…

传送门 最小圆覆盖模板. //Achen #include<algorithm> #include<iostream> #include<cstring> #include<cstdlib> #include<vector> #include<cstdio> #include<queue> #include<cmath> ; typedef long long LL; typedef double db; us…

//第一期 计算几何题的特点与做题要领: 1.大部分不会很难,少部分题目思路很巧妙 2.做计算几何题目,模板很重要,模板必须高度可靠. 3.要注意代码的组织,因为计算几何的题目很容易上两百行代码,里面大部分是模板.如果代码一片混乱,那么会严重影响做题正确率. 4.注意精度控制. 5.能用整数的地方尽量用整数,要想到扩大数据的方法(扩大一倍,或扩大sqrt2).因为整数不用考虑浮点误差,而且运算比浮点快. 一.点,线,面,形基本关系,点积叉积的理解 POJ 2318 TOYS(推荐) http:/…

http://acm.hdu.edu.cn/showproblem.php?pid=3007 相关题型连接: http://acm.hdu.edu.cn/showproblem.php?pid=3932 http://acm.zju.edu.cn/onlinejudge/showProblem.do?problemId=450 Buried memory Time Limit: 2000/1000 MS (Java/Others)    Memory Limit: 32768/32768 K (…

Buried memory Time Limit: 2000/1000 MS (Java/Others)    Memory Limit: 32768/32768 K (Java/Others)Total Submission(s): 4067    Accepted Submission(s): 2171 Problem Description Each person had do something foolish along with his or her growth.But,when…