链接 利用旋转卡壳 参考博客http://www.cppblog.com/staryjy/archive/2010/09/25/101412.html #include <iostream> #include<cstdio> #include<cstring> #include<algorithm> #include<stdlib.h> #include<vector> #include<cmath> #include&l…

链接: http://poj.org/problem?id=2187 http://acm.hust.edu.cn/vjudge/contest/view.action?cid=22013#problem/E Beauty Contest Time Limit: 3000MS   Memory Limit: 65536K Total Submissions: 24254   Accepted: 7403 Description Bessie, Farmer John's prize cow, h…

给定点集的最远两点的距离. 先用graham求凸包.旋(xuán)转(zhuàn)卡(qiǎ)壳(ké)求凸包直径. ps:旋转卡壳算法的典型运用 http://blog.csdn.net/hanchengxi/article/details/8639476. #include <cstdio> #include <cmath> #include <algorithm> #define sqr(x) (x)*(x) #define N 50001 using names…

/* poj 2187 Beauty Contest 凸包:寻找每两点之间距离的最大值 这个最大值一定是在凸包的边缘上的! 求凸包的算法: Andrew算法! */ #include<iostream> #include<cstdio> #include<cstring> #include<algorithm> using namespace std; struct Point{ Point(){} Point(int x, int y){ this->…

旋转卡壳求凸包直径. 参考:http://www.cppblog.com/staryjy/archive/2010/09/25/101412.html #include <cstdio> #include <cmath> #include <algorithm> using namespace std; << ; struct Point { int x, y; Point( , ):x(x), y(y) { } }; typedef Point Vecto…

题目链接:http://poj.org/problem?id=2187 Time Limit: 3000MS Memory Limit: 65536K Description Bessie, Farmer John's prize cow, has just won first place in a bovine beauty contest, earning the title 'Miss Cow World'. As a result, Bessie will make a tour of…

题目链接 题意:就是给N个点的坐标,然后求任意两个点距离的平方最大的值 枚举超时. 当明白了 最远距离的两个点一定在凸包上,一切就好办了.求出凸包,然后枚举 #include <iostream> #include <cstring> #include <cstdio> #include <algorithm> using namespace std; ; + ; struct Node { int x, y; }; Node node[Max], ch[M…

G++一直没有过了 换成 C++果断A掉了...It's time to bet RP. 题意:给一个多边形,然后放进去两个圆,让两个圆的覆盖面积尽量最大,输出两个圆心的坐标. 思路:将多边形的边向里平移圆的的半径R,然后求新多边形的距离最长的两个点. 平移多少废了一点脑筋,其他的就都是现成的模板了. 这个是平移的函数,自己想得,不知道还有没有更简便的.左右平移只需要改一下 向量 V void Panning_Edge(P &a1,P &a2,double dis) { //向v的右侧平移…

Beauty Contest Time Limit: 3000MS   Memory Limit: 65536K Total Submissions: 27276   Accepted: 8432 Description Bessie, Farmer John's prize cow, has just won first place in a bovine beauty contest, earning the title 'Miss Cow World'. As a result, Bess…

题目链接 http://poj.org/problem?id=2187 先求凸包 再求凸多边形直径 旋转卡壳模板题 #include<cstdio> #include<cstring> #include<algorithm> #include<cmath> #include<iostream> #define N 50010 using namespace std; int n,tp,ans; struct P{ int x,y; bool op…