G. Robots time limit per test 5.0 s memory limit per test 256 MB input standard input output standard output The Robotics Olympiad teams were competing in a contest. There was a tree drawn on the floor, consisting of n nodes and n - 1 edges. The node…

传送门 The Robotics Olympiad teams were competing in a contest. There was a tree drawn on the floor, consisting of n nodes and n - 1 edges. The nodes are numbered from 1 to n, and each edge has a weight. The tree is rooted at the first node. q teams are…

Gym - 101915A  Printing Books 题意:有一本书,从第X页开始,一共用了n位数字,求此书一共多少页.99就是两位数字,100就是三位数字. 思路:直接模拟即可,我用了一个high和一个low,因为我把数字按位数分成了几个部分,1-9,10-99,100-999等(实际上high会等于1000),这样就会low = 100,high = 999之类的了,如果遇到边界,比如刚开始时,low和high有所调整,比如low=x,high=999,以方便计算. #include<…

要back的题目 目标是全绿!back一题删一题! acmm7 1003 1004 acmm8 1003 1004 sysu20181013 Stat Origin Title Solved A Gym 100624A Kingdoms   B Gym 100624B Who wants to live forever? Solved C Gym 100624C Chemist's vows   D Gym 100624D Non-boring sequences Attempted E Gym…

Vitaly works at the warehouse. The warehouse can be represented as a grid of n × m cells, each of which either is free or is occupied by a container. From every free cell it's possible to reach every other free cell by moving only through the cells s…

题意 链接给你一个n*m的地图,'#'代表墙,‘.’代表可走的,1代表1号机器人,2代表2号机器人,机器人可以上下左右移动到非墙的位置,但不能走到另一个机器人身上.问能否交换1和2的位置. 分析 如果1和2之间有路径且路径上某个点的度大于2,那就是YES,如果1和2的路径构成一个回路也是YES.其他情况就是NO. 代码 #include<cstdio> #define N 200005 int n,m,ux,uy,ax,ay,a[N],u[N],ck,ans,fx[4]= {1,-1,0,0}…

Problem K. Kitchen Robot Time Limit: 1 Sec Memory Limit: 256 MB 题目连接 http://codeforces.com/gym/100610 Description Robots are becoming more and more popular. They are used nowadays not only in manufacturing plants, but also at home. One programmer wit…

题目链接:http://codeforces.com/gym/100971/problem/J Vitaly works at the warehouse. The warehouse can be represented as a grid of n × m cells, each of which either is free or is occupied by a container. From every free cell it's possible to reach every ot…

题目链接:http://codeforces.com/gym/100971/problem/J J. Robots at Warehouse time limit per test 2.0 s memory limit per test 256 MB input standard input output standard output Vitaly works at the warehouse. The warehouse can be represented as a grid of n ×…

layout: post title: (寒假开黑gym)2018 ACM-ICPC, Syrian Collegiate Programming Contest author: "luowentaoaa" catalog: true tags: mathjax: true - codeforces 传送门 付队! 许老师! Hello SCPC 2018! (签到) #include<bits/stdc++.h> using namespace std; typedef…

介绍 OpenAI Gym是一款用于研发和比较强化学习算法的工具包,它支持训练智能体(agent)做任何事——从行走到玩Pong或围棋之类的游戏都在范围中. OpenAI Gym 是一个用于开发和比较RL 算法的工具包,与其他的数值计算库兼容,如tensorflow 或者theano 库.现在主要支持的是python 语言,以后将支持其他语言.官方提供的gym文档. OpenAI Gym包含两部分: gym 开源 包含一个测试问题集,每个问题成为环境(environment),可以用于自己的强化…

 Gym 101047M Removing coins in Kem Kadrãn Time Limit:2000MS     Memory Limit:65536KB     64bit IO Format:%I64d & %I64u Practice Description standard input/output Andréh and his friend Andréas are board-game aficionados. They know many of their friend…

 Gym 101047K Training with Phuket's larvae Time Limit:2000MS     Memory Limit:65536KB     64bit IO Format:%I64d & %I64u Practice Description standard input/output Thai cuisine is known for combining seasonings so that every dish has flavors that are…

Gym 101047E Escape from Ayutthaya Time Limit:2000MS     Memory Limit:65536KB     64bit IO Format:%I64d & %I64u  Practice  Description standard input/output Ayutthaya was one of the first kingdoms in Thailand, spanning since its foundation in 1350 to…

 Gym 101047B  Renzo and the palindromic decoration Time Limit:2000MS     Memory Limit:65536KB     64bit IO Format:%I64d & %I64u Practice Description standard input/output At the ruins of Wat Phra Si Sanphet (วดพระศรสรรเพชญ), one can find famous inscr…

网站 robots.txt 文件编写 Intro robots.txt 是网站根目录下的一个纯文本文件,在这个文件中网站管理者可以声明该网站中不想被robots访问的部分,或者指定搜索引擎只收录指定的内容. 当一个搜索机器人(有的叫搜索蜘蛛或爬虫)访问一个站点时,它会首先检查该站点根目录下是否存在robots.txt ,如果存在,搜索机器人就会按照该文件中的内容来确定访问的范围: 如果该文件不存在,那么搜索机器人就沿着链接抓取. robots.txt 必须放置在一个站点的根目录下,而且文件名必须…

Robots.txt - 禁止爬虫 robots.txt用于禁止网络爬虫访问网站指定目录.robots.txt的格式采用面向行的语法:空行.注释行(以#打头).规则行.规则行的格式为:Field: value.常见的规则行:User-Agent.Disallow.Allow行. User-Agent行 User-Agent: robot-name User-Agent: * Disallow和Allow行 Disallow: /path Disallow: # 空字符串,起通配符效果,全禁止 A…

1如果允许所有搜索引擎访问网站的所有部分的话 我们可以建立一个空白的文本文档,命名为robots.txt放在网站的根目录下即可.robots.txt写法如下:User-agent: *Disallow:或者User-agent: *Allow: /2如果我们禁止所有搜索引擎访问网站的所有部分的话robots.txt写法如下:User-agent: *Disallow: /3如果我们需要某一个搜索引擎的抓取的话,比如百度,禁止百度索引我们的网站的话robots.txt写法如下:User-agent…

Robots Time Limit: 2000/1000 MS (Java/Others)    Memory Limit: 65536/65536 K (Java/Others)Total Submission(s): 60    Accepted Submission(s): 13 Problem Description QXJ has N robots on the plane, the i-th is at (xi,yi), numbereded 1 to N. Every robot…

大家好,我的robots.txt文件没错,为何百度总提示封禁,哪位高人帮我看看原因,在此谢过. 我的站点www.haokda.com,robots.txt如下: ## robots.txt for PHPCMS v9#User-agent: * Disallow: /cachesDisallow: /phpcmsDisallow: /installDisallow: /phpsso_serverDisallow: /apiDisallow: /admin.php 这个问题非常纠结,找不出原因来,…

html头部标签写法: <meta name="robots" content="index,follow" /> content中的值决定允许抓取的类型,必须同时包含两个值:是否允许索引(index)和是否跟踪链接(follow,也可以理解为是否允许沿着网页中的超级链接继续抓取).共有4个参数可选,组成4个组合: index,follow:允许抓取本页,允许跟踪链接. index,nofollow:允许抓取本页,但禁止跟踪链接. noindex,fol…

正常情况这样就好使 <mvc:resources mapping="/robots.txt" location="/lib/robots.txt"/> 如果controller能够接收到该url /robots.txt,加上 order="0" <mvc:resources mapping="/robots.txt" location="/lib/robots.txt" order=&qu…

题目链接 http://codeforces.com/gym/101102/problem/J Description standard input/output You are given an array A of integers of size N, and Q queries. For each query, you will be given a set of distinct integers S and two integers L and R that represent a…

题目链接 http://codeforces.com/gym/100917/problem/J Description standard input/outputStatements The jury of Berland regional olympiad in informatics does not trust to contest management systems, so the Berland regional programming contest is judged by th…

题目链接 http://codeforces.com/gym/100917/problem/D problem description Famous Berland coder and IT manager Linus Gates announced his next proprietary open-source system "Winux 10.04 LTS" In this system command "dir -C" prints list of all…

题目链接 http://codeforces.com/gym/101102/problem/D problem  description Given an R×C grid with each cell containing an integer, find the number of subrectangles in this grid that contain only one distinct integer; this means every cell in a subrectangle…

题目链接 http://codeforces.com/gym/101102/problem/C problem description Judge Bahosain was bored at ACM AmrahCPC 2016 as the winner of the contest had the first rank from the second hour until the end of the contest. Bahosain is studying the results of t…

Crashing Robots Time Limit: 1000MS   Memory Limit: 65536K Total Submissions: 9859   Accepted: 4209 Description In a modernized warehouse, robots are used to fetch the goods. Careful planning is needed to ensure that the robots reach their destination…

目前很多网站管理者似乎对robots.txt并没有引起多大重视,甚至不知道这么一个文件的作用.本来应该保密的信息被爬虫抓取了,公布在公网上,本应该发布到公网的信息却迟迟不被搜索引擎收录.所以下面这篇文章,就来介绍robots.txt的作用和写作 robots.txt基本介绍 robots 是一个纯文本文件,是用来告诉搜索引擎:当前这个网站上哪些部分可以被访问.哪些不可以,robots文件是存放在网站根目录下的一个纯文本文件.当搜索引擎访问一个网站时,它首先会检查该网站根目录下是否存在robots…

作为网站开发者或网站管理员一定知道网站对搜索引擎的优化有多重要,好的网站不仅要有漂亮的界面,良好的用户体验,还要有较高的更新频率.要被百度.google这样的搜索引擎大量收录,才能增加网站展示量,访问量和排名,以达到推广的目的. 所以,一般正规一点的公司都有专门的SEO专员负责网站的推广与更新. 说到SEO,首先要做的就是Robots.txt文件. Robots.txt是一个非常简单的 搜索引擎声明文件(也叫网站蜘蛛声明文件),是用来帮助网站蜘蛛更快更好的理解网站的架构和站点地图. 这里,还有一…