K. Perpetuum Mobile Time Limit: 2 Sec Memory Limit: 256 MB 题目连接 http://codeforces.com/gym/100187/problem/K Description The world famous scientist Innokentiy almost finished the creation of perpetuum mobile. Its main part is the energy generator which…

The world famous scientist Innokentiy almost finished the creation of perpetuum mobile. Its main part is the energy generator which allows the other mobile's parts work. The generator consists of two long parallel plates with n lasers on one of them…

比赛F-F     Perpetuum Mobile 题目链接:http://acm.hust.edu.cn/vjudge/contest/view.action?cid=86640#problem/F 题目: Description standard input/output Statements The world famous scientist Innokentiy almost finished the creation of perpetuum mobile. Its main pa…

Perpetuum Mobile 题目描述 The year is 1902. Albert Einstein is working in the patent office in Bern. Many patent proposals contain egregious errors; some even violate the law of conservation of energy. To make matters worse, the majority of proposals make…

A Drawing Borders 很多构造方法,下图可能是最简单的了 代码: #include<bits/stdc++.h> using namespace std; ; struct Point{ int x,y; }; Point a[maxn]; ; Point b[maxn]; ; vector<pair<double,double> > va; vector<pair<double,double> > vb; void checka(…

A. Drawing Borders Unsolved. B. Buildings Unsolved. C. Joyride Upsolved. 题意: 在游乐园中,有n个游玩设施,有些设施之间有道路,给出每个设施需要花费的时间和价格,以及经过每条道路的时间,求从设施1出发恰好回到设施1恰好花费时间x的最小花费. 思路: $dist[i][j] 表示 第i个时刻 到第j个点的最小花费  从<t[1], 1> -> <x, 1>$ 跑最短路即可 #include <bit…

题目链接:https://codeforces.com/gym/101873 C. Joyride 记忆化搜索形式的dp #include <algorithm> #include <iterator> #include <iostream> #include <cstring> #include <cstdlib> #include <iomanip> #include <bitset> #include <cct…

$$2017-2018\ ACM-ICPC\ German\ Collegiate\ Programming\ Contest (GCPC 2017)$$ \(A.Drawing\ Borders\) \(B.Buildings\) Polya定理搞一搞 //#pragma GCC optimize("O3") //#pragma comment(linker, "/STACK:1024000000,1024000000") #include<bits/std…

在PHP项目经常要导入导出Excel表单. 先去下载PHPExcel类库文件,放到相应位置. 我在thinkphp框架中的位置为ThinkPHP/Library/Org/Util/ 导入 在页面上传excel文件提交到后台,利用form表单提单即可 <form method="post" enctype="multipart/form-data" action="" > <input type="submit"…

Java Magic. Part 3: Finally @(Base)[JDK, magic, 黑魔法] 转载请写明:原文地址 英文原文 系列文章: -Java Magic. Part 1: java.net.URL -Java Magic. Part 2: 0xCAFEBABE -Java Magic. Part 3: Finally -Java Magic. Part 4: sun.misc.Unsafe 所有JAVA程序员都应该知道一个基本概念-finally一定会被执行,但是真的是这样么…