模拟退火算法,很久之前就写过一篇文章了.双倍经验题(POJ 2420) 题意: 在一个矩形区域内,求一个点的距离到所有点的距离最短的那个,最大. 这个题意,很像二分定义,但是毫无思路,也不能暴力枚举,那就模拟退火. 参考著名的ACdream,哈哈,有个共同点,那就是,大部分的代码,都没有做接受准则,这也许是acmer对智能算法的不习惯吧~~~ #include <stdio.h> #include <math.h> #include <algorithm> using…

题意:找出一点,距离所有所有点的最短距离最大 二维平面内模拟退火即可,同样这题用最小圆覆盖也是可以的. Source Code: //#pragma comment(linker, "/STACK:16777216") //for c++ Compiler #include <stdio.h> #include <iostream> #include <fstream> #include <cstring> #include <cm…

题目链接 POJ输出不能用%lf! mmp从4:30改到6:00,把4:30交的一改输出也过了. 于是就有了两份代码.. //392K 500MS //用两点构成的矩形更新,就不需要管边界了 #include <cmath> #include <cstdio> #include <cctype> #include <algorithm> #define gc() getchar() #define Rate (0.9) #define Rand() (1.0…

题目大意: 给定一堆点,找到一个点的位置使这个点到所有点中的最小距离最大 这里数据范围很小,精度要求也不高,我们这里可以利用模拟退火的方法,随机找到下一个点,如果下一个点比当前点优秀就更新当前点 参考:http://www.cnblogs.com/heaad/archive/2010/12/20/1911614.html http://wenku.baidu.com/view/0c6b5df5f61fb7360b4c65a9.html #include <cstdio> #include &l…

Run Away Time Limit: 3000MS   Memory Limit: 65536K Total Submissions: 6482   Accepted: 1993 Description One of the traps we will encounter in the Pyramid is located in the Large Room. A lot of small holes are drilled into the floor. They look complet…

A Star not a Tree? Time Limit: 1000MS   Memory Limit: 65536K Total Submissions: 6066   Accepted: 2853 Description Luke wants to upgrade his home computer network from 10mbs to 100mbs. His existing network uses 10base2 (coaxial) cables that allow you…

模拟退火算法. 随机MAX个点,然后,退火移动,选取距离所有点中最短中最长者即可.理解和我上一篇一样. #include <iostream> #include <cstdio> #include <cstring> #include <algorithm> #include <cmath> #include <time.h> using namespace std; const int MAXN=1010; const int MA…

模拟退火的第一题~ //By SiriusRen #include <cmath> #include <cstdio> #include <algorithm> using namespace std; int cases,X,Y,M; struct Point{double x,y,dis;}point[1005],b[33],ans,t; double dis(Point a){ double tmp=1e8; for(int i=1;i<=M;i++){ d…

题意:有n个陷阱,在X,Y范围内要求出一个点使得这个点到陷阱的最小距离最大. 思路:模拟退火,随机撒入40个点,然后模拟退火随机化移动. (这题poj坑爹,加了srand(time(NULL))不能交G++,不加srand(time(NULL))又会WA,交了C++不能用acos(-1),只能用3.1415926代替,真是坑爹.) #include<algorithm> #include<cstdio> #include<cmath> #include<cstri…

Super Star Time Limit: 1000MS   Memory Limit: 65536K Total Submissions: 6422   Accepted: 1591   Special Judge Description During a voyage of the starship Hakodate-maru (see Problem 1406), researchers found strange synchronized movements of stars. Hav…