题意 二维空间中有\(n\)个运动的点,每个点有一个初始坐标和速度向量.求出一个时间\(T\),使得此时任意两点之间的最大距离最小.输出\(T\)和最大距离. 题解 模拟退火. 这个题告诉了我,初始步长要够大.这是很重要的. //#include <bits/stdc++.h> #include <cstdio> #include <cmath> #include <ctime> #include <algorithm> #include <…

There are N points in total. Every point moves in certain direction and certain speed. We want to know at what time that the largest distance between any two points would be minimum. And also, we require you to calculate that minimum distance. We gua…

The Moving Points Time Limit: 6000/3000 MS (Java/Others)    Memory Limit: 32768/32768 K (Java/Others)Total Submission(s): 72    Accepted Submission(s): 18 Problem Description There are N points in total. Every point moves in certain direction and cer…

The Moving Points Time Limit: 6000/3000 MS (Java/Others)    Memory Limit: 32768/32768 K (Java/Others)Total Submission(s): 878    Accepted Submission(s): 353 Problem Description There are N points in total. Every point moves in certain direction and c…

The Moving Points Time Limit: 6000/3000 MS (Java/Others)    Memory Limit: 32768/32768 K (Java/Others) Total Submission(s): 710    Accepted Submission(s): 290 Problem Description There are N points in total. Every point moves in certain direction and…

The Moving Points Time Limit: 6000/3000 MS (Java/Others)    Memory Limit: 32768/32768 K (Java/Others)Total Submission(s): 964    Accepted Submission(s): 393 Problem Description There are N points in total. Every point moves in certain direction and c…

The Moving Points Time Limit: 6000/3000 MS (Java/Others)    Memory Limit: 32768/32768 K (Java/Others) Total Submission(s): 612    Accepted Submission(s): 250 Problem Description There are N points in total. Every point moves in certain direction and…

The Moving Points Time Limit: 6000/3000 MS (Java/Others)    Memory Limit: 32768/32768 K (Java/Others)Total Submission(s): 2122    Accepted Submission(s): 884 Problem Description There are N points in total. Every point moves in certain direction and…

Codeforce 1311 F. Moving Points 解析(思維.離散化.BIT.前綴和) 今天我們來看看CF1311F 題目連結 題目 略,請直接看原題. 前言 最近寫1900的題目更容易不看題解了,不知道是不是較少人\(AC\)的同難度題目會比較簡單. @copyright petjelinux 版權所有 觀看更多正版原始文章請至petjelinux的blog 想法 首先注意到,如果\(x\)座標上的前後兩點\(x_i,x_j\),\(x_i<x_j\),如果\(v[x_i]>v…

题目链接:http://acm.hdu.edu.cn/showproblem.php?pid=4717 题意:给出n个点的坐标和运动速度(包括方向).求一个时刻t使得该时刻时任意两点距离最大值最小. 思路:每两个点之间的距离随时间的变化是一个开口向上的抛物线.把所有的抛物线画出来.然后每个时刻取最大值.发现这个最大值是单峰函数. struct point { double x,y; void get() { RD(x,y); } point(){} point(double _x,double…