https://codeforces.com/contest/958/problem/B2 题解:https://www.cnblogs.com/Cool-Angel/p/8862649.html upd2018-11-01: 修了一个bug(第60行加入inq[1]=1) #include<cstdio> #include<algorithm> #include<cstring> #include<vector> #include<queue>…

Description 传送门(翻译就别想了,本人英语太垃圾) Solution 设ans[i]为设置i个船时能控制的最多星球数(看到这你可能因为是dp,然而我可以很负责地告诉你是假的) 首先一个显然的结论,ans[1]=1,ans[2]=树的直径长 有由B1题的提示我们也可以得到一个显然的结论,要使控制数最多,其实只有叶子节点是有用的 如果这样,那就比较容易了. 我们可以先找出树的直径,然后从直径上的点向外扩展,记录每个节点的深度(叶子节点深度为一个常数,反正只要一样又不会爆类型就无所谓) 为…

https://codeforces.com/contest/958/problem/E2 首先求出N个时刻的N-1个间隔长度,问题就相当于在这些间隔中选K个数,相邻两个不能同时选,要求和最小 方法1: 一个K^2的做法,有一定技巧 https://www.cnblogs.com/void-f/p/8867585.html 方法2: 是可撤销贪心的模板? 就是贪心的选权值最小的,但是在选完某一个位置i后把它前一个没有被删的位置pre[i]和后一个没有被删的位置nxt[i]删掉,将i的权值变为(-…

Bike loves looking for the second maximum element in the sequence. The second maximum element in the sequence of distinct numbers x1, x2, ..., xk (k > 1) is such maximum element xj, that the following inequality holds: . The lucky number of the seque…

1406A. Subset Mex https://codeforces.com/contest/1406/problem/A Example input 4 6 0 2 1 5 0 1 3 0 1 2 4 0 2 0 1 6 1 2 3 4 5 6 output 5 3 4 0 Note In the first test case,\(A=\{0,1,2\},B=\{0,1,5\}\) is a possible choice. In the second test case, \(A=\{…

[URL Quoting] The URL quoting functions focus on taking program data and making it safe for use as URL components by quoting special characters and appropriately encoding non-ASCII text. They also support reversing these operations to recreate the or…

请点击页面左上角 -> Fork me on Github 或直接访问本项目Github地址:LeetCode Solution by Swift    说明:题目中含有$符号则为付费题目. 如:[Swift]LeetCode156.二叉树的上下颠倒 $ Binary Tree Upside Down 请下拉滚动条查看最新 Weekly Contest!!! Swift LeetCode 目录 | Catalog 序        号 题名Title 难度     Difficulty  两数之…

Unity3d-Particle System 5.x系统的学习(四) 今天,我们来聊聊unity5.x的粒子系统和unity4.x粒子系统的区别. 我大致看了下,区别还是蛮多的,但是总体的粒子制作思路一样,只不过添加了很多子模块方便我们制作出更加美观的粒子. 下面是总体的粒子系统组件: 红色边框划出的就是unity5.x新增的子模块. ok,我们接下来分析每个模块的特征和参数: External Forces:(风(wind zone)对粒子的影响) 从英文表面意思解析:就是外部的力.(风力就…

Persisting Data to the Device Edit PagePage History Overview The Android framework offers several options and strategies for persistence: Shared Preferences - Easily save basic data as key-value pairs in a private persisted dictionary. Local Files -…

Overview For maximum control over local data, developers can use SQLite directly by leveraging SQLiteOpenHelper for executing SQL requests and managing a local database. In this guide, we'll use the example of building a database to persist user crea…

Using the CREATE DATABASE Statement to Create a CDB This section describes creating a CDB using the CREATE DATABASE SQL statement. Note: Oracle strongly recommends using the Database Configuration Assistant (DBCA) instead of the CREATE DATABASE SQL s…

前提 入行已经7,8年了,一直想做一套漂亮点的自定义控件,于是就有了本系列文章. GitHub:https://github.com/kwwwvagaa/NetWinformControl 码云:https://gitee.com/kwwwvagaa/net_winform_custom_control.git 如果觉得写的还行,请点个 star 支持一下吧 欢迎前来交流探讨: 企鹅群568015492  麻烦博客下方点个[推荐],谢谢 NuGet Install-Package HZH_Con…

[译]Vulkan教程(01)入门 接下来我将翻译(https://vulkan-tutorial.com)上的Vulkan教程.这可能是我学习Vulkan的最好方式,但不是最理想的方式. 我会用“driver(驱动程序)”这样的方式翻译某些关键词语,在后续的文字中,则只使用英文.这可以减少歧义,且使译文易读. Introduction 入门 About E-book Tutorial structure About 关于 This tutorial will teach you the bas…

All LeetCode Questions List(Part of Answers, still updating) 题目汇总及部分答案(持续更新中) Leetcode problems classified by company 题目按公司分类(Last updated: October 2, 2017) .   Top Interview Questions # Title Difficulty Acceptance 1 Two Sum Medium 17.70% 2 Add Two N…

ALSA stands for the Advanced Linux Sound Architecture. It consists of a set of kernel drivers, an application programming interface (API) library and utility programs for supporting sound under Linux. In this article, I present a brief overview of th…

官网 http://www.hzhcontrols.com/ 前提 入行已经7,8年了,一直想做一套漂亮点的自定义控件,于是就有了本系列文章. GitHub:https://github.com/kwwwvagaa/NetWinformControl 码云:https://gitee.com/kwwwvagaa/net_winform_custom_control.git 如果觉得写的还行,请点个 star 支持一下吧 欢迎前来交流探讨: 企鹅群568015492  来都来了,点个[推荐]再走吧…

byl太强了,学弟们太强了-全程被吊打,嘤嘤嘤- A题  Connecting Vertices http://codeforces.com/problemset/problem/888/F 不会 B题 Local Extrema http://codeforces.com/problemset/problem/888/A 给一列数字,判断一个数它的左右是否同时比它大,或者同时比它小,若满足的话那么count++,得到最后的count值,那么很明显,直接暴力的遍历一遍就可以了. 1 #inclu…

老板加薪!看我做的WPF Loading!!! 控件名:RingLoading 作者:WPFDevelopersOrg 原文链接: https://github.com/WPFDevelopersOrg/WPFDevelopers.Minimal 框架使用大于等于.NET40: Visual Studio 2022; 项目使用 MIT 开源许可协议: 老板觉得公司系统等待动画转圈太简单,所以需要做一个稍微好看点的,就有这篇等待RingLoading动画 最外层使用Viewbox为父控件内部嵌套创…

Little Pony and Expected Maximum Time Limit:1000MS     Memory Limit:262144KB     64bit IO Format:%I64d & %I64u Submit Status Practice CodeForces 454C Description Twilight Sparkle was playing Ludo with her friends Rainbow Dash, Apple Jack and Flutter…

Spiral Maximum 题目连接: http://codeforces.com/problemset/problem/173/C Description Let's consider a k × k square, divided into unit squares. Please note that k ≥ 3 and is odd. We'll paint squares starting from the upper left square in the following orde…

B. Maximum Submatrix 2 Time Limit: 20 Sec Memory Limit: 256 MB 题目连接 http://codeforces.com/problemset/problem/375/B Description You are given a matrix consisting of digits zero and one, its size is n × m. You are allowed to rearrange its rows. What is…

A. Maximum Increase time limit per test 1 second memory limit per test 256 megabytes input standard input output standard output You are given array consisting of n integers. Your task is to find the maximum length of an increasing subarray of the gi…

Spiral Maximum Time Limit:3000MS     Memory Limit:262144KB     64bit IO Format:%I64d & %I64u Submit Status Practice CodeForces 173C Description Let's consider a k × k square, divided into unit squares. Please note that k ≥ 3 and is odd. We'll paint s…

B. Maximum Value Time Limit: 20 Sec Memory Limit: 256 MB 题目连接 http://codeforces.com/contest/484/problem/B Description You are given a sequence a consisting of n integers. Find the maximum possible value of (integer remainder of ai divided by aj), whe…

题目链接:Codeforces 484B Maximum Value 题目大意:给定一个序列,找到连个数ai和aj,ai%aj尽量大,而且ai≥aj 解题思路:类似于素数筛选法的方式,每次枚举aj,然后枚举k,每次用二分找到小于k∗aj而且最大的ai,维护答案,过程中加了一些剪枝. #include <cstdio> #include <cstring> #include <algorithm> using namespace std; const int maxn =…

A. Little Pony and Expected Maximum Time Limit: 1 Sec  Memory Limit: 256 MB 题目连接 http://codeforces.com/contest/453/problem/A Description Twilight Sparkle was playing Ludo with her friends Rainbow Dash, Apple Jack and Flutter Shy. But she kept losing.…

Maximum Sum of Digits You are given a positive integer n. Let S(x)S(x) be sum of digits in base 10 representation of xx , for example, S(123)=1+2+3=6S(123)=1+2+3=6 , S(0)=0S(0)=0 . Your task is to find two integers a,ba,b , such that 0≤a,b≤n0≤a,b≤n ,…

传送门:http://codeforces.com/contest/1092/problem/F F. Tree with Maximum Cost time limit per test 2 seconds memory limit per test 256 megabytes input standard input output standard output You are given a tree consisting exactly of nn vertices. Tree is a…

 E. Maximum Matching 题目链接:https://codeforces.com/contest/1038/problem/E 题意: 给出n个项链,每条项链左边和右边都有一种颜色(范围1~4),然后每条项链都有对应的价值. 现在你可以任意改变项链的位置,也可以交换左右两边的颜色,问怎么做才能得到最大的价值.一条项链得到价值,就要求其左边的颜色和左边的项链右边颜色相等,并且右边的颜色和右边项链左边的颜色相等. 题解: 分析就可以发现这个题就是找一条权值最大的欧拉路径(每条边刚好经…

D. Maximum Diameter Graph 题目链接:https://codeforces.com/contest/1082/problem/D 题意: 给出n个点的最大入度数,要求添加边构成一个无环无向无重边的图,并且最大化图中的最短路径. 题解: 要求最短路径最大,我们会想到把每一个允许入度可以大于1的点先连起来,形成一个”链“,当前肯定满足条件,并且两端点的最短路径长度是所有情况中最大的. 然后对于入度为1的点,先尽量考虑放在链的两端,然后再在中间随便插入. 代码如下: 先附上自己…