二分Vx即可. #include<cstdio> #include<algorithm> using namespace std; #define EPS 0.00000000001 struct RANGE{ int l,r; double f; }rs[110]; bool cmp(const RANGE &a,const RANGE &b){ return a.l<b.l; } int xe,ye,n,Left; bool check(double vx…

数学问题. 在不经过shield时,竖直速度是1.所以时间就是y/1=y,,,,在经过shield时,时间为shield的数值长度*影响因素,然后总时间把他们加起来,最后再用水平方向的长度除以总时间,还有就是这个题目要用double. #include<bits/stdc++.h> using namespace std; void solve(){ ; scanf("%lf%lf",&x,&y); int t; scanf("%d",&…

A. Arranging Hat $f[i][j]$表示保证前$i$个数字有序,修改了$j$次时第$i$个数字的最小值. 时间复杂度$O(n^3m)$. #include <bits/stdc++.h> using namespace std ; typedef long long LL ; #define clr( a , x ) memset ( a , x , sizeof a ) typedef pair<int,int>pi; char ten='9'+1; int n,…

算法编程Algos Programming 不同算法的集合,用于编程比赛,如ACM ICPC. 算法按主题划分.大多数算法都可以从文件中按原样运行.每种算法都有一个参考问题,并对其时间和空间复杂度作了一些说明. 参考:https://github.com/ADJA/algos 算法列表List of algorithms 动态(优化,规划)编程Dynamic Programming Convex Hull trick – Convex Hull trick is a geometry based…

Problem Management Problem management seeks to identify the underlying causes of incidents in an IT infrastructure and to remove those causes. The problem management process addresses the causes of incidents reactively and proactively. Reactive probl…

题目描述 Most of you have played card games (and if you haven’t, why not???) in which the deck of cards is randomized by shuffling it one or more times.A perfect shuffle is a type of shuffle where the initial deck is divided exactly in half, and the two hal…

The 11th Zhejiang Provincial Collegiate Programming Contest is coming! As a problem setter, Edward is going to arrange the order of the problems. As we know, the arrangement will have a great effect on the result of the contest. For example, it will…

Introduction Among simulation engineers, it is well accepted that the solution of a PDE can be envisioned as the following three general steps (actually, this was also my premature understanding during the early era of my study on numerical simulatio…

Copied From:http://csfieldguide.org.nz/en/curriculum-guides/ncea/level-3/complexity-tractability-TSP.html This is a guide for students attempting Complexity and Tractability in digital technologies achievement standard 3.44. This guide is not officia…

题目链接:http://acm.zju.edu.cn/onlinejudge/showProblem.do?problemCode=3777 Time Limit: 2 Seconds      Memory Limit: 65536 KB The 11th Zhejiang Provincial Collegiate Programming Contest is coming! As a problem setter, Edward is going to arrange the order…