B. Silly Mistake 题目大意: 首先定义有效的一天: 每一个不同的数字只能进去一次,出来一次,正数代表进去,负数代表出来 每一个人不能过夜 不合理: 一个数字只有进去,或者只有出来则是无效的 给你一个数组,让你把数字分成若干个有效天,不要求最大化这个天数,也不要求最小化这个天数, 问怎么划分,如果无法划分则输出-1 题目思路: 这个题目我觉得不是很简单,反正我写的比较吃力 首先我们要模拟这个进入和出去,则可以用一个bool数组,为真则是进去,为假则是出去. 其次我们要判断是不是同一…

题目:愚蠢的错误 题意:中心公司有一个办公室有一个成熟的安全系统,这里面有10^6个雇员,编号从1到10^6 安全系统有入口和出口,数字i表示第i个雇员进入,-i表示第i个雇员出去 公司有一些严格的规矩: 1.雇员一天可以进入办公司最多一次 2.如果今天雇员没进雇员,他是无法出去的 3.办公室空的,代表里面的人都出去了 [1, 7, -7, 3, -1, -3]表示一个有效的一天,1进入,7进入,7出去,3进入,1出去,3出去 这里有a1,a2,...,an表示它们进出的序列,这个序列表示一天或…

#include<iostream> #include<map> #include<set> #include<algorithm> using namespace std; ; map<int,bool>vis; set<int>b; int n,a[N],c[N]; int main() { scanf("%d",&n); ; i <= n; i++) { scanf("%d"…

题意:有一个公司,每天有员工进出,$a[i]>0$时表示$a[i]$这个员工进入公司,$a[i]<0$时表示$-a[i]$这个员工出公司,公司对进出办公室有一些严格的规定 员工每天最多只能进入一次办公室 如果那天他没有进办公室的话,他显然不能离开 每天开始和结束时,办公室都是空的(员工不能呆在晚上),办公室也可能在一天中的任何时候都是空的 现在给你序列$a$($a[i] \neq 0$),问你是否能够把数组$a$分为几个相邻的子数组,使得每一个子数组员工的进出情况符合要求并输出每一个子数组的长…

Static Types as using So, we are all quite familiar with this notion of accessing static class members using the qualification first. It is not required now. Importing static using can save the day. For example, before C# 6.0, we had to accessReadKey…

Doing well in your courses a guide by Andrej Karpathy Here is some advice I would give to younger students if they wish to do well in their undergraduate courses. Having been tested for many years of my life (with pretty good results), here are some…

原文地址:http://www.codeproject.com/Tips/1023426/Whats-New-in-Csharp 本来想翻译一下贴出来,但是好像很多语言组织起来比较困难,读书少不会表达了. 最近一直强迫自己都一些英文资料努力提交英文阅读水平. 从c#6发布有段时间了,一个片段一个片段的看到说c#6的新特性,感觉都不是很全,总感觉老外貌似有好多时间去整理,而且整理的很详细. C# 6.0. features walkthrough with easy to understand e…

应用场景:网站维护和未开发完成时,一般需要把所有请求都跳转的一个相关说明的页面,这样用户不至于困惑这个网站是不存在还是怎么了. Solution1:使用一个名称为 app_offline.htm(名字需要一样,不区分大小写)文件,把这个文件放到你网站的根目录下面,至于这个页面的内容,你可以自己定义.现在所有的请求都会重定向到app_offline.htm页面.当你的网站完成之后,把app_offline.htm 文件删除即可. Solution2:在asp.net 中也可以使用HttpRedir…

Reference: https://impythonist.wordpress.com/2016/02/21/building-high-performance-django-systems/ The main motto of Django web framework is: The web framework for perfectionists with deadlines It is true. Django always gives a polished product within…

用户与程序交互的媒介称为用户界面(user interface)或人机界面(human-computer interface). 19.2    Border接口8个实现Border接口的标准边框类:*    BevelBorder*    SoftBevelBorder*    LineBorder*    EtchedBorder*    TitledBorder*    MatteBorder*    CompoundBorder*    EmptyBorder 19.3    Icon接…

python信用评分卡(附代码,博主录制) https://study.163.com/course/introduction.htm?courseId=1005214003&utm_campaign=commission&utm_source=cp-400000000398149&utm_medium=share  banking case1 http://ucanalytics.com/blogs/data-visualization-case-study-banking/ A…

传送门 A. Single Push 直接乱搞即可. Code /* * Author: heyuhhh * Created Time: 2019/11/16 22:36:20 */ #include <bits/stdc++.h> #define MP make_pair #define fi first #define se second #define sz(x) (int)(x).size() #define all(x) (x).begin(), (x).end() #define…

CF Round #600 (Div 2) 解题报告(A~E) A:Single Push 采用差分的思想,让\(b-a=c\),然后观察\(c\)序列是不是一个满足要求的序列 #include<bits/stdc++.h> using namespace std; const int maxn = 1e5 + 10; int T, n; int a[maxn], b[maxn]; int c[maxn]; int main() { cin >> T; while(T--) { s…

https://stackoverflow.com/questions/18290864/create-a-cursor-from-hardcoded-array-instead-of-db Create a cursor from hardcoded array instead of DB Ask Question Asked 6 years, 11 months ago Active 6 years, 11 months ago Viewed 18k times   41 I am tryi…

make no mistake, we are the last line of defense.…

题目传送门 /* 题意:给三个点求它们的外接圆,判断一个点是否在园内 计算几何:我用重心当圆心竟然AC了,数据真水:) 正解以后补充,http://www.cnblogs.com/kuangbin/archive/2013/09/11/3315055.html */ #include <cstdio> #include <iostream> #include <algorithm> #include <cstring> #include <string…

As we all know, Matt is an outstanding contestant in ACM-ICPC. Graph problems are his favorite.Once, he came up with a simple algorithm for finding the maximal independent set in trees by mistake.A tree is a connected undirected graph without cycles,…

Problem Description Three wizards are doing a experiment. To avoid from bothering, a special magic is set around them. The magic forms a circle, which covers those three wizards, in other words, all of them are inside or on the border of the circle.…

Naive and Silly Muggles Time Limit: 2000/1000 MS (Java/Others)    Memory Limit: 32768/32768 K (Java/Others)Total Submission(s): 137    Accepted Submission(s): 94 Problem Description Three wizards are doing a experiment. To avoid from bothering, a spe…

Stock market volatility continues unabated. It may be too early to tell, but I’m marking the top of this current market correction at July 20, with the bottom still to be determined (though I’d say it’s still a few weeks off). Since July 20, investor…

Naive and Silly Muggles Time Limit: 2000/1000 MS (Java/Others) Memory Limit: 32768/32768 K (Java/Others) Total Submission(s): 228 Accepted Submission(s): 163 Problem Description Three wizards are doing a experiment. To avoid from bothering, a special…

Naive and Silly Muggles Time Limit: 2000/1000 MS (Java/Others)    Memory Limit: 32768/32768 K (Java/Others) Total Submission(s): 152    Accepted Submission(s): 107 Problem Description Three wizards are doing a experiment. To avoid from bothering, a s…

Naive and Silly Muggles Time Limit: 2000/1000 MS (Java/Others)    Memory Limit: 32768/32768 K (Java/Others)Total Submission(s): 452    Accepted Submission(s): 307 Problem Description Three wizards are doing a experiment. To avoid from bothering, a sp…

PHP Advanced and Object-Oriented Programming 3rd Edition Related to modularity is abstraction: classes should be defined broadly. This is a common and understandable beginner’s mistake. As an example, instead of designing a class for interacting with…

[common mistake of closure in loops] 下例中item引用的始终是最后一个值. function showHelp(help) { document.getElementById('help').innerHTML = help; } function setupHelp() { var helpText = [ {'id': 'email', 'help': 'Your e-mail address'}, {'id': 'name', 'help': 'You…

Naive and Silly Muggles Time Limit: 2000/1000 MS (Java/Others)    Memory Limit: 32768/32768 K (Java/Others)Total Submission(s): 24    Accepted Submission(s): 17 Problem Description Three wizards are doing a experiment. To avoid from bothering, a spec…

Naive and Silly Muggles Time Limit: 2000/1000 MS (Java/Others)    Memory Limit: 32768/32768 K (Java/Others) Total Submission(s): 61    Accepted Submission(s): 39 Problem Description Three wizards are doing a experiment. To avoid from bothering, a spe…

One of the top suggestions (currently #15 on uservoice) for improving C# is the addition of non-nullable reference types. This is not surprising, considering the number of functions that start with a block of ‘if (x == null) throw new ArgumentNullExc…

音标复习 绿色:连读:                  红色:略读:               蓝色:浊化:               橙色:弱读 口语蜕变(2017/6/24) If your dream was big enough and you had the guts to follow it, there was truly a fortune to be made. [ɪf] [jʊr] [drim] [wɒz] [bɪɡ] [ɪˈnʌf] [əndˌ ən] [ju] [h…

Description Three wizards are doing a experiment. To avoid from bothering, a special magic is set around them. The magic forms a circle, which covers those three wizards, in other words, all of them are inside or on the border of the circle. And due…