lights

In the long and interesting history of Christmas lights, nothing is brighter than light-emitting diodes (or LEDs). But what makes LED Christmas lights such a powerful light source? And how to create colors in the LEDs? LEDs not only make more efficient use of the power they consume, but they also tend to be brighter due to this efficient use of electrical energy. But now, this is not true news for anyone. Most people know that using LEDs can save electricity, and they now have more illumination than incandescent lights. But what about those colors? Is the color created in the LED the same as a

问题描述: 有编号1~100个灯泡，起初所有的灯都是灭的。有100个同学来按灯泡开关，如果灯是亮的，那么按过开关之后，灯会灭掉。如果灯是灭的，按过开关之后灯会亮。 现在开始按开关。 第1个同学，把所有的灯泡 开关都按一次(按开关灯的编号： 1 ,2,3,......100)。 第2个同学，隔一个灯 按一次(按开关灯的编号： 2 ,4,6,......,100)。 第3个同学，隔两个灯 按一次(按开关灯的编号： 3 ,6,9,......,99)。 ...... 问题是，在第100个同学按过之后，有多少盏灯是亮着的？这些灯的编号是多少？要求给出解题思路或给出伪码。 c#代码 static void TurnLights() { //存放一百个灯的亮灭情况，默认为灭，这里取101是为了从编号1到100 方便数字的处理无其他意义 bool[] lights = new bool[101]; //从第1个同学到第100个，依次按灯 for (int i = 1; i <= 100; i++) { //从第i个灯开始，隔着i-1个灯按，所以j+=1 for (int j = i; j <= lights.Length - 1; j += i) { //进行取反操作 lights[j] = !lights[j]; } } for (int i = 1; i <= lights.Length-1

Creating ambient lighting in the home can bridge the gap between the internal world and the outside world. Why not use LED decorative lighting to paint the walls and let it feel your feelings? With LED ambient lighting effects and design, you can turn your space into settings. Not only is it a setting, the latest LEDs have programmable options so you can create multiple effects in the same room. LED Decorative Light Supplier continue to discuss why lighting in the surrounding environment has become a decoration? LED environmental lighting benefits You will find that the light of LEDs is

In the past 100 years, lighting has gone a long way. LED decorative lighting is now designed to meet any visual need. Consumers find it difficult to choose between traditional and modern styles. These options are easily overwhelmed when choosing lights for home décor. Although the trend is in and out of such things, the technology is only expanding. In order to narrow the scope, LED decorative light suppliers recommend that you use LED neon design. These lights have significant advantages over traditional glass neon lights. Don't just follow the trend, go ahead and know why you make a choice.

链接: https://codeforces.com/contest/1209/problem/B 题意: It is a holiday season, and Koala is decorating his house with cool lights! He owns n lights, all of which flash periodically. After taking a quick glance at them, Koala realizes that each of his lights can be described with two parameters ai and bi. Light with parameters ai and bi will toggle (on to off, or off to on) every ai seconds starting from the bi-th second. In other words, it will toggle at the moments bi, bi+ai, bi+2⋅ai and so on. You know for each light whether it's initially on or off and its corresponding parameters ai and bi.

We all like the cheerful glow of holiday lights, so the process goes seamless from start to finish. We will show you how to make hanging, storing and setting LED Holiday Light easier. How to add an outdoor outlet Most houses have only two external exits, one in the front and one in the back. This can be done most of the year, but when you hang up a holiday light, it's really troublesome. This is also very dangerous. An overloaded wire or socket can cause a fire, and the lanes and sidewalks that are staggered with wires can cause tripping. In just a few hours, you can solve these problems

It is a holiday season, and Koala is decorating his house with cool lights! He owns n lights, all of which flash periodically. After taking a quick glance at them, Koala realizes that each of his lights can be described with two parameters a i and bi. Light with parameters a i and b i will toggle (on to off, or off to on) every a i seconds starting from the b i -th second. In other words, it will toggle at the moments bi, b i + a i , b i + 2 ⋅ a i and so on. You know for each light whether it's initially on or off and its corresponding parameters a i and b i . Koala is wondering what is the

P2962 [USACO09NOV]灯Lights guass消元异或方程组 #include<bits/stdc++.h> using namespace std; #define maxn 100 #define sc(x) scanf("%lld",&x); #define int long long int A[maxn][maxn]; int x[maxn]; int ans=1000; int n,m; void guass() { for(int i=1; i<=n; i++) { int t=i; if(!A[t][t]) { for(int j=i+1; j<=n; j++) { if(A[j][i]) { t=j; break; } } swap(A[i],A[t]); } for(int k=i+1; k<=n; k++) { if(A[k][i]) { for(int j=1; j<=n+1; j++) { A[k][j]^=A[i][j];///消元 } } } } } void dfs(int i,int t) { if(t>ans)return; if(i==0){ ans=min(t,ans); return; } if(A[i][i]){ x[i]=A[i][n+1]; for(int j=i+1;j<=n;j++) if(A[i][j]){x[i

在读取.VTK文件的时候出现如标题错误，代码如下 1 #include<vtkSmartPointer.h> 2 #include<vtkRenderWindow.h> 3 #include<vtkRenderer.h> 4 #include<vtkRenderWindowInteractor.h> 5 #include<vtkInteractorStyleTrackballCamera.h> 6 #include<vtkCylinderSource.h> 7 #include<vtkPolyDataMapper.h> 8 #include<vtkActor.h> 9 #include<vtkLight.h> 10 #include<vtkCamera.h> 11 #include<vtkJPEGReader.h> 12 #include<vtkTexture.h> 13 #include<vtkPlaneSource.h> 14 #include<vtkStructuredPointsReader.h> 15 #include<vtkMarchingCubes.h> 16 #include "vtkOpenGLRenderWindow.h" 17 18 void showMarchingCubes() 19 { 20 vtkSmartPointer

全文共 2951 字，预计学习时长 6 分钟 你有没有在大冬天里的深夜里，为了关灯睡觉而不得不离开温暖被窝的经历？ 本文将介绍如何为普通家庭照明开关构建自然语言接口，以便用户可以使用如“请打开所有灯”或者“打开孩子房间里的灯”等简单命令来控制灯光。 本文主要介绍自然语言接口（NLI）部分，不涵盖语音识别与实际灯光操作部分。你可以使用WebSpeech轻易实现语音转换，如有所需，也可使用Arduino/Homekit提供的简化API（应用程序编程接口）控制家中灯光。 我们所使用的工具是NLPCraft和Scala语言（NLPCraft也适用于Java、Groovy和Kotlin等基于JVM的语言）。NLPCraft是一个免费开源项目，它可以帮助你为任何设备或软件快速构建领域特定自然语言接口。 NLPCraft使用现代语义建模和基于确定性意图的用户输入匹配，而非传统的计算语言学（即神经网络），因此，它不需要任何已有的域语料库，也不需要冗长的模型训练与开发。 使用NLPCraft时，大多数工作都围绕着为特定领域构建语义模型展开。一种模型定义一组应当在用户中检测到的命名实体（由用户定义或源于spaCy, OpenNLP, Stanford CoreNLP或者 Google Natural Language等第三方）。NLPCraft还包含一种高级意图匹配工具，稍后会在示例中用到。