http://www.fishyou.com/aquarium-filtration.php Aquarium Filtration This section covers aquarium filtration. This is the most important aspect of fishkeeping. In fact, to your fish, this is as important as the sewage system you have! Without it you ca…

http://www.fishyou.com/aquarium-cycling.php Aquarium Cycling Aquarium cycling actually refers to the nitrogen cycle. It is a process where waste products from your fish converts from harmful chemicals to harmless chemicals, naturally! Getting Started…

http://www.fishyou.com/filtration-biological.php Biological Filtration Biological filtration is the removal of harmful waste chemicals that is produced by fish waste and uneaten food in the aquarium. These waste products causes the rise of ammonia in…

Aquarium Tank Time Limit: 1 Sec  Memory Limit: 128 MBSubmit: 15  Solved: 4[Submit][Status][Web Board] Description You just bought an “artistic” aquarium tank that has an interesting shape, and you poured L litres of water into the tank. How high is t…

[CF799E]Aquarium decoration 题意:有n个物品,小A和小B各自喜欢其中的某些物品,一件物品可能既被小A喜欢又被小B喜欢,也可能既不被小A喜欢又不被小B喜欢.每个物品都有一个价格$c_i$,让你选出其中的m件物品,满足小A和小B都至少喜欢其中的k件,且总价格最小. $n\le 2\times 10^5,c_i\le 10^9$ 题解:我们把物品分成四部分:0,A,B,AB,并分别排序,然后我们枚举AB中选了i个.接着我们可以二分:在A,B,0中选择的价格最大的物品的价格m…

E - Aquarium decoration 枚举两个人都喜欢的个数,就能得到单个喜欢的个数,然后用平衡树维护前k大的和. #include<bits/stdc++.h> #define LL long long #define fi first #define se second #define mk make_pair #define PII pair<int, int> #define PLI pair<LL, int> #define ull unsigned…

题目大意:在nxm的方格中,每一个1x1的小方格中都有一堵沿对角线的墙,并且每堵墙都有一个坚固程度,这些墙将nxm的方格分割成了若干个区域.现在要拆除一些墙,使其变成一个区域. 题目分析:将区域视作点,将墙视作边,这样问题就变成了求最小生成树. 代码如下: # include<iostream> # include<cstdio> # include<cmath> # include<vector> # include<list> # inclu…

题意:给R*C的房间,每个房间被左上-右下或右上-左下的墙分割为两个小房间,将分割移除有一定花费,问使所有小房间联通需要的最小花费 把每个房间分成左右(上下?)两个点,判一判,本来就联通的加零边,一个房间里的两个点间加花费的边,跑kruskal即可 #include<cstdio> #include<cstring> #include<algorithm> using namespace std; ; typedef struct{ int a,b,l; }Edge;…

WebGL 是一项在网页浏览器呈现3D画面的技术,有别于过去需要安装浏览器插件,通过 WebGL 的技术,只需要编写网页代码即可实现3D图像的展示.WebGL 可以为 Canvas 提供硬件3D加速渲染,这样 Web 开发人员就可以借助系统显卡来在浏览器里更流畅地展示3D场景和模型了.在这篇文章中20个不可思议的 WebGL 示例来增强你对于这个新技术的理解. 1. Aquarium Image Source:www.webglsamples.org Created by Greggman an…

在开发中我们可曾有过这样的需求,将某个网页嵌入到.Net应用中来,但Winform自带的web browser不怎么理想.CefSharp可以让我们在.Net应用中嵌入一个Chromium.它提供了WPF和Winform版的web browser 控件,能很好的渲染出HTML5效果而且和宿主程序有很强的交互能力.  git地址:https://github.com/cefsharp/CefSharp . 在WPF中使用 在Nugget中输入CefSharp,找到CefSharp.WPF 并按照到…