RIDE 自动化脚本Chrome浏览器打开的log中没有详细步骤 //大神求助!!急!急!急! 20C








a5274gangci 不是这样子,不知道CSDN咋回事,图片上传不成功,是我打开浏览器后日志显示不全,没有详细的过程如:keyword.等等,最末行只有一个message
一年多之前 回复


a5274gangci 不是没有日志,是日志不全,那会没上传成功图片,刚才搞好了您帮忙看下!多谢!
一年多之前 回复


a5274gangci 不是没有日志,是日志不全,那会没上传成功图片,刚才搞好了您帮忙看下!多谢!
一年多之前 回复


Csdn user default icon
# 求助 各路大神指教! --- 问题描述: 跑用例时,跑到 handle alert、alert should be present、select window这类代码,就一直卡住,不会继续往下走,日志中也没有任何报错。 只有部分用例会出现这种情况,有些用例中同样有这类代码却能运行成功。 而且出现问题的这些脚本,什么都没改的情况下,偶尔也能运行成功。 --- 已试方法: 尝试过换浏览器和驱动,也在每次脚本运行前,添加了关闭浏览器驱动,都不见效。猜测还是和环境有关。 --- 问题情况截图如下:运行到handle alert时,卡了10分钟,日志也停留在handle alert之前。 ![图片说明](https://img-ask.csdn.net/upload/201912/18/1576652465_214248.png) --- ![图片说明](https://img-ask.csdn.net/upload/201912/18/1576652304_176760.png) --- ![图片说明](https://img-ask.csdn.net/upload/201912/18/1576652289_420252.png) --- 使用环境: win10 + ride1.7.3 + python3.7.0 + firefox 71.0 (64位) + geckodriver 0.26.0 (64位)
Win10,64位,Python版本3.8.1, pip 19.3.1 Pypubsub 4.0.3 pywin32 227 requests 2.22.0 robotframework 3.1.2 robotframework-ride 1.7.4 setuptools 41.2.0 wxPython 4.1.0a1.dev4523+46bae17a 出现的情况是:用命令行python ride.py启动就如图报错; 直接双击ride.py会有一个空白的命令行窗口闪一下,然后就没反应了。 这个报错图上面还有蛮长的一段,内容都是<class 'robotide.preferences.configobj.UnreprError'> Parse error in value at lineXX这种。 ![图片说明](https://img-ask.csdn.net/upload/202001/12/1578762599_139263.png) 还请大佬能为我答疑解惑。
Robotframework + appium环境已配置,计算器脚本在ride上执行时,报错
Robotframework + appium环境已配置,计算器脚本在ride上执行时,报错: WebDriverException: Message: An unknown server-side error occurred while processing the command. Original error: Could not find 'adb.exe' in PATH. Please set the ANDROID_HOME environment variable with the Android SDK root directory path. 在命令行中执行adb.exe正常,为什么会报这个错呢?求助
Ride案例跑起来后浏览器空白,不能正常运行,报错:UnicodeDecodeError: 'utf8' codec can't decode byte 0xcd in position 18
RIDE的testcase edit界面显示异常/空白
问题描述: 在电脑A通过运行exe安装python后,把python38文件夹拷贝到另一台电脑B(Python\Python38)。 在电脑B的Python文件夹安装pip,并安装Selenium2Library, robotframework, wxPython, robotframework-ride 安装成功,环境配置成功 电脑B运行ride.py,RIDE的testcase edit界面显示异常/空白(如图) 此时cmd的报错信息: module 'urllib' has no attribute 'Request' 尝试过的方法: 1、在ride.py添加import urllib.request 2、安装urllib3 3、添加requests packages,及配套的certifi, idna;Django packages,和pytz, sqlparse, chardet等。 以上,均未解决问题。 希望有大神可以帮助解答,谢谢! ![图片说明](https://img-ask.csdn.net/upload/201911/08/1573205687_271275.jpg)
Ticket to Ride 的编程
Problem Description Ticket to Ride is a board game for up to 5 players. The goal of the game is to set up train lines (and to thwart the opponents’ attempts at setting up their train lines). At the beginning of play, each player is assigned four train lines. A player may choose to discard as many of these four assignments as she likes. Each assignment has a score, corresponding to its difficulty (so, typically, a train line between e.g. Stockholm and Tokyo would be worth more than a train line between e.g. Stockholm and Utrecht). At the end of the game, each player gets points for the assignments that they have successfully completed, and penalty points for the assignments that they have failed to complete. An assignment consists of a pair of cities that are to be connected by a series of shorter railway routes. A route can be claimed (for a certain cost associated with the route), but things are complicated by the fact that there is only a limited number of routes, and once a player claims a route, none of the other players can claim it. A player has successfully set up a train line between two cities if there is a path between the two cities using only routes that have been claimed by this player. For simplicity, we will ignore all additional aspects of the game (including the actual process of claiming routes and additional ways to score points). For instance, if your assignment is to connect Stockholm and Amsterdam in the Figure above, you would probably want to claim the routes between Stockholm and Copenhagen, and between Copenhagen and Amsterdam. But if another player manages to claim the route between Copenhagen and Stockholm before you, your train line would have to use some other routes, e.g. by going to Copenhagen via Oslo. In this problem, we will consider the rather bold strategy of trying to complete all four assignments (typically, this will be quite hard). As a preliminary assessment of the difficulty of achieving this, we would like to calculate the minimum cost of setting up all four lines assuming that none of the other players interfere with our plans. Your job is to write a program to determine this minimum cost. Input The input consists of several (at most 20) games to be analyzed. Each game starts with two integers 1 <= n <= 30, 0 <= m <= 1 000, giving the number of cities and railway routes in the map, respectively. Then follow n lines, giving the names of the n cities. City names are at most 20 characters long and consist solely of lower case letters (’a’-’z’). After this follow m lines, each containing the names of two different cities and an integer 1 <= c <= 10 000, indicating that there is a railway route with cost c between the two cities. Note that there may be several railway routes between the same pair of cities. You may assume that it is always possible to set up a train line from any city to any other city. Finally, there will be four lines, each containing the names of two cities, giving the four train line assignments. The input is terminated by a case where n = m = 0. This case should not be processed. Output For each game, output a single line containing a single integer, the minimum possible cost to set up all four train lines. Sample Input 10 15 stockholm amsterdam london berlin copenhagen oslo helsinki dublin reykjavik brussels oslo stockholm 415 stockholm helsinki 396 oslo london 1153 oslo copenhagen 485 stockholm copenhagen 522 copenhagen berlin 354 copenhagen amsterdam 622 helsinki berlin 1107 london amsterdam 356 berlin amsterdam 575 london dublin 463 reykjavik dublin 1498 reykjavik oslo 1748 london brussels 318 brussels amsterdam 173 stockholm amsterdam oslo london reykjavik dublin brussels helsinki 2 1 first second first second 10 first first first first second first first first 0 0 Sample Output 3907 10
The best riding route 怎么来写呢
Problem Description As a cheap labor in a small company, LL has to ride back and forth between school and office every day. It is a tedious trip. So he want to design the most satisfactory riding route. After several day's experiment, he draw the simple map. It contains n*m areas. The school is in (0,0) while the office is in (n-1,m-1). He also record the scenery rank of each area A(i,j) and the time need to ride through each area B(i,j). ( For the start and end, A(0,0), B(0,0), A(n-1,m-1), B(n-1,m-1) are always 0. ) Now, LL defines the satisfactory degree of a round trip as follow: ∑{ A(i,j) | Area (i,j) is in the riding route (come or go). } the satisfactory degree = ---------------------------------------------------------------------- ∑{ B(i,j) | Area (i,j) is in the riding route (come or go). } Attention: 1. LL doesn't want to make a detour. So, from school to office he only ride rightward or downward and from office to school only leftward or upward. 2. LL won't pass the same area in the whole round trip except the start and end. Input Each test case begins with two integers n,m ( 3<=n,m<=30 ), which is the size of the map. Then n lines follow, each contains m integers A(i,j). Another n lines follow, each contains m integers B(i,j). 1 <= A(i,j),B(i,j) <= 100. Output For each case, Output the maximal satisfactory degree he can get in a round trip. Sample Input 3 3 0 1 2 3 4 5 6 7 0 0 7 6 5 4 3 2 1 0 Sample Output 13/11
Paper Route 正确实现的过程
Problem Description As a poor, tuition-ridden student, you've decided to take up a part time job as a paperboy/papergirl. You've just been handed your paper route: a set of addresses (conveniently labelled 1 to N). Every morning, you start at the newspaper office (which happens to be address number 0). You have to plan a route to deliver a newspaper to every address - and you also want to get to class right after you're done. Conveniently, there are only N roads in your area connecting the addresses, and each of them takes a known time to traverse. Also, you've precalculated the time it takes to get to Waterloo campus from each address, including the newspaper office (through some combination of biking, busing, or hitching a ride). How soon can you be done delivering papers and be in your seat at school? Input Input consists of a number of cases, for each case: First, there will be a single integer N (the number of addresses, 1 ≤ N ≤ 100,000). Next, there will be N+1 lines, each with an integer ci (starting with i = 0, 0 ≤ ci ≤ 1,000,000,000), the time it takes to get from location i to campus. Finally, the input will contain N lines, each with three integers a, b, c (0 ≤ a, b ≤ N, a != b, 0 ≤ c ≤ 1,000). Each of these lines describes a road between locations a and b taking c minutes to traverse. It is guaranteed that you will be able to reach all the addresses. (Remember that location 0 is the newspaper office.) Output Output the minimum time it will take to deliver all the papers and get to class. Sample Input 2 1 3 4 0 1 1 0 2 2 Sample Output 7
Disney's FastPass 程序怎么编写的
Problem Description Disney's FastPass is a virtual queuing system created by the Walt Disney Company. First introduced in 1999 (thugh the idea of a ride reservation system was first introduced in world fairs), Fast-Pass allows guests to avoid long lines at the attractions on which the system is installed, freeing them to enjoy other attractions during their wait. The service is available at no additional charge to all park guests. --- wikipedia Disneyland is a large theme park with plenties of entertainment facilities, also with a large number of tourists. Normally, you need to wait for a long time before geting the chance to enjoy any of the attractions. The FastPass is a system allowing you to pick up FastPass-tickets in some specific position, and use them at the corresponding facility to avoid long lines. With the help of the FastPass System, one can arrange his/her trip more efficiently. You are given the map of the whole park, and there are some attractions that you are interested in. How to visit all the interested attractions within the shortest time? Input The first line contains an integer T(1<=T<=25), indicating the number of test cases. Each test case contains several lines. The first line contains three integers N,M,K(1 <= N <= 50; 0 <= M <= N(N - 1)/2; 0 <= K <= 8), indicating the number of locations(starting with 1, and 1 is the only gate of the park where the trip must be started and ended), the number of roads and the number of interested attractions. The following M lines each contains three integers A,B,D(1 <= A,B <= N; 0 <= D <= 10^4) which means it takes D minutes to travel between location A and location B. The following K lines each contains several integers Pi, Ti, FTi,Ni, Fi,1, Fi,2 ... Fi,Ni-1, FiNi ,(1 <= Pi,Ni, Fi,j <=N, 0 <= FTi <= Ti <= 10^4), which means the ith interested araction is placed at location Pi and there are Ni locations Fi,1; Fi,2 ... Fi,Ni where you can get the FastPass for the ith attraction. If you come to the ith attraction with its FastPass, you need to wait for only FTi minutes, otherwise you need to wait for Ti minutes. You can assume that all the locations are connected and there is at most one road between any two locations. Note that there might be several attrractions at one location. Output For each test case in the input, print one line: "Case #X: Y", where X is the test case number (starting with 1) and Y is the minimum time of the trip. Sample Input 2 4 5 2 1 2 8 2 3 4 3 4 19 4 1 6 2 4 7 2 25 18 1 3 4 12 6 1 3 4 6 2 1 2 5 1 4 4 3 1 1 3 2 1 3 4 1 2 4 10 2 8 3 1 4 4 8 3 1 2 Sample Output Case #1: 53 Case #2: 14
Taxi Cab Scheme 的计算
Problem Description Running a taxi station is not all that simple. Apart from the obvious demand for a centralised coordination of the cabs in order to pick up the customers calling to get a cab as soon as possible, there is also a need to schedule all the taxi rides which have been booked in advance. Given a list of all booked taxi rides for the next day, you want to minimise the number of cabs needed to carry out all of the rides. For the sake of simplicity, we model a city as a rectangular grid. An address in the city is denoted by two integers: the street and avenue number. The time needed to get from the address a, b to c, d by taxi is |a &#8722; c| + |b &#8722; d| minutes. A cab may carry out a booked ride if it is its first ride of the day, or if it can get to the source address of the new ride from its latest , at least one minute before the new ride’s scheduled departure. Note that some rides may end after midnight. Input On the first line of the input is a single positive integer N, telling the number of test scenarios to follow. Each scenario begins with a line containing an integer M, 0 < M < 500, being the number of booked taxi rides. The following M lines contain the rides. Each ride is described by a departure time on the format hh:mm (ranging from 00:00 to 23:59), two integers a b that are the coordinates of the source address and two integers c d that are the coordinates of the destination address. All coordinates are at least 0 and strictly smaller than 200. The booked rides in each scenario are sorted in order of increasing departure time. Output For each scenario, output one line containing the minimum number of cabs required to carry out all the booked taxi rides. Sample Input 2 2 08:00 10 11 9 16 08:07 9 16 10 11 2 08:00 10 11 9 16 08:06 9 16 10 11 Sample Output 1 2
robotframework 执行报错command: pybot.bat --argumentfile
各位前辈们,我根据教程安装robotframework,并根据网上教程执行命令打开ride,但是run用例就报command: pybot.bat --argumentfile c:\users\zhoudn\appdata\local\temp\RIDEfc7_t_.d\argfile.txt --listener C:\Python27\lib\site-packages\robotide\contrib\testrunner\TestRunnerAgent.py:45557:False C:\Python27\Scripts\Learn_1\测试项目 [Error 267] 执行命令pybot--version,没问题 Robot Framework 3.1.2 <python on win32
Paper Route 的问题求解
Problem Description As a poor, tuition-ridden student, you've decided to take up a part time job as a paperboy/papergirl. You've just been handed your paper route: a set of addresses (conveniently labelled 1 to N). Every morning, you start at the newspaper office (which happens to be address number 0). You have to plan a route to deliver a newspaper to every address - and you also want to get to class right after you're done. Conveniently, there are only N roads in your area connecting the addresses, and each of them takes a known time to traverse. Also, you've precalculated the time it takes to get to Waterloo campus from each address, including the newspaper office (through some combination of biking, busing, or hitching a ride). How soon can you be done delivering papers and be in your seat at school? Input Input consists of a number of cases, for each case: First, there will be a single integer N (the number of addresses, 1 ≤ N ≤ 100,000). Next, there will be N+1 lines, each with an integer ci (starting with i = 0, 0 ≤ ci ≤ 1,000,000,000), the time it takes to get from location i to campus. Finally, the input will contain N lines, each with three integers a, b, c (0 ≤ a, b ≤ N, a != b, 0 ≤ c ≤ 1,000). Each of these lines describes a road between locations a and b taking c minutes to traverse. It is guaranteed that you will be able to reach all the addresses. (Remember that location 0 is the newspaper office.) Output Output the minimum time it will take to deliver all the papers and get to class. Sample Input 2 1 3 4 0 1 1 0 2 2 Sample Output 7
·Robotframework」运行ride.py 报错 麻烦大神们看一下!
环境:Ubuntu 16.04 折腾了好久pip install robotframework-ride 才成功 运行ride.py又又又报错了 心累 麻烦各位帮我看看 指点迷津 ``` pip install robotframework-ride 提示 Looking in indexes: https://pypi.tuna.tsinghua.edu.cn/simple Requirement already satisfied: robotframework-ride in /usr/local/lib/python2.7/dist-packages (1.7.4b1.dev1) Requirement already satisfied: wxPython in /usr/lib/python2.7/dist-packages/wx-2.8-gtk2-unicode (from robotframework-ride) ( Requirement already satisfied: PyPubSub in /usr/local/lib/python2.7/dist-packages (from robotframework-ride) (3.3.0) Requirement already satisfied: Pygments in /usr/local/lib/python2.7/dist-packages (from robotframework-ride) (2.4.2 ``` ``` ride.py后 ``` ![图片说明](https://img-ask.csdn.net/upload/201907/18/1563447987_206124.png) 报错:Traceback (most recent call last): File "/usr/local/lib/python2.7/dist-packages/robotide/__init__.py", line 83, in main _run(inpath, not noupdatecheck, debug_console) File "/usr/local/lib/python2.7/dist-packages/robotide/__init__.py", line 112, in _run ride = RIDE(inpath, updatecheck) File "/usr/local/lib/python2.7/dist-packages/robotide/application/application.py", line 45, in __init__ wx.App.__init__(self, redirect=False) File "/usr/lib/python2.7/dist-packages/wx-2.8-gtk2-unicode/wx/_core.py", line 7981, in __init__ self._BootstrapApp() File "/usr/lib/python2.7/dist-packages/wx-2.8-gtk2-unicode/wx/_core.py", line 7555, in _BootstrapApp return _core_.PyApp__BootstrapApp(*args, **kwargs) File "/usr/local/lib/python2.7/dist-packages/robotide/application/application.py", line 55, in OnInit self.frame = RideFrame(self, self._controller) File "/usr/local/lib/python2.7/dist-packages/robotide/ui/mainframe.py", line 173, in __init__ self.Bind(wx.EVT_DIRCTRL_FILEACTIVATED, self.OnOpenFile) AttributeError: 'module' object has no attribute 'EVT_DIRCTRL_FILEACTIVATED' 麻烦各位了!!非常感谢!!
这几天研究robotframework,下载完了,昨天还可以正常运行,我今天又安装了个mysql和tomcat,按理说这个没有影响吧,但是今天打开robotframework-ride,就变成了下面一串代码,不是之前的图形界面了。百度也没搜到这种问题。有知道的吗,麻烦帮忙看下,谢谢。 #!C:\Python27\python.exe # Copyright 2008-2015 Nokia Solutions and Networks # # Licensed under the Apache License, Version 2.0 (the "License"); # you may not use this file except in compliance with the License. # You may obtain a copy of the License at # # http://www.apache.org/licenses/LICENSE-2.0 # # Unless required by applicable law or agreed to in writing, software # distributed under the License is distributed on an "AS IS" BASIS, # WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. # See the License for the specific language governing permissions and # limitations under the License. import sys from robotide import main # Must be protected against reimporting # As multiprocessing has an odd requirement # and we use multiprocessing # http://docs.python.org/library/multiprocessing.html#windows if __name__ == '__main__': main(*sys.argv[1:])
Ball bearings 怎么办的
Problem Description The Swedish company SKF makes ball bearings. As explained by Britannica Online, a ball bearing is “one of the two types of rolling, or anti friction, bearings (the other is the roller bearing). Its function is to connect two machine members that move relative to one another so that the frictional resistance to motion is minimal. In many applications, one of the members is a rotating shaft and the other a fixed housing. Each ball bearing has three main parts: two grooved, ring like races and a number of balls. The balls fill the space between the two races and roll with negligible friction in the grooves. The balls may be loosely restrained and separated by means of a retainer or cage.” Presumably, the more balls you have inside the outer ring, the smoother the ride will be, but how many can you t within the outer ring? You will be given the inner diameter of the outer ring, the diameter of the balls, and the minimum distance between neighboring balls. Your task is to compute the maximum number of balls that will t on the inside of the outer ring (all balls must touch the outer ring). Input The first line of input contains a positive integer n that indicates the number of test cases. Then follow n lines, each describing a test case. Each test case consists of three positive oating point numbers, D, d, s, where D is the inner diameter of the outer ring, d is the diameter of a ball, and s is the minimum distance between balls. All parameters are in the range [0.0001, 500.0]. Output For each test case output a single integer m on a line by itself, where m is the maximum number of balls that can t in the ball bearing, given the above constraints. There will always be room for at least three balls. Sample Input 2 20 1 0.1 100.0 13.0 0.2 Sample Output 54 20
lbootstrap carouse特效在ejs文件中使用,但是效果是图片无法滑动
homepage.ejs ``` <!DOCTYPE html> <html> <head> <link rel="stylesheet" type="text/css" href="https://maxcdn.bootstrapcdn.com/bootstrap/4.3.1/css/bootstrap.min.css"> <script type="text/javascript" src="https://maxcdn.bootstrapcdn.com/bootstrap/4.3.1/js/bootstrap.min.js"></script> </head> <body> <div id="carouselExampleIndicators" class="carousel slide" data-ride="carousel"> <ol class="carousel-indicators"> <li data-target="#carouselExampleIndicators" data-slide-to="0" class="active"></li> <li data-target="#carouselExampleIndicators" data-slide-to="1"></li> <li data-target="#carouselExampleIndicators" data-slide-to="2"></li> </ol> <div class="carousel-inner"> <div class="carousel-item active"> <img class="d-block w-100" src="https://indianinkonline.com/wp-content/uploads/2016/05/caffebene.jpg" alt="First slide"> </div> <div class="carousel-item"> <img class="d-block w-100" src="https://sevenpie.com/wp-content/uploads/2019/05/hdl-header.png" alt="Second slide"> </div> <div class="carousel-item"> <img class="d-block w-100" src="https://assets.simpleviewinc.com/simpleview/image/fetch/c_limit,q_80,w_1200/https://assets.simpleviewinc.com/simpleview/image/upload/crm/neworleans/LittleKoreaBBQ-270-5c581f515056b36_5c582258-5056-b365-ab9c393ec69b4d13.jpg" alt="Third slide"> </div> </div> <a class="carousel-control-prev" href="#carouselExampleIndicators" role="button" data-slide="prev"> <span class="carousel-control-prev-icon" aria-hidden="true"></span> <span class="sr-only">Previous</span> </a> <a class="carousel-control-next" href="#carouselExampleIndicators" role="button" data-slide="next"> <span class="carousel-control-next-icon" aria-hidden="true"></span> <span class="sr-only">Next</span> </a> </div> </body> </html> ``` ``` //load express var express = require("express"); var app = express(); var bodyParser = require("body-parser"); app.use(bodyParser.urlencoded({extended: true})); app.use(express.static(__dirname + "/public")); app.set("view engine", "ejs"); //homepage app.get("/", function(req, res){ res.render("homepage"); }); app.listen(3000, () => { console.log("Server is running at localhost: 3000"); }); ```
robotframework ride 什么时候支持python3.0?
官方wiki说,不支持python3.0,但是python以后全力支持3.0,ride就不打算支持3.0了么? 求解:robotframework ride 什么时候支持python3.0? 下面是官方wiki: RIDE runs only on the regular Python, not on Jython nor IronPython. Python 2.6 is the minimum version. Notice that similarly as Robot Framework, RIDE does not yet support Python 3.
各位大佬,小白请教一个问题,我在cmd命令下运行ride.py的时候报如下错,能否帮忙看下,小白谢谢各位大佬了~! E:\Python27\Scripts>python ride.py Traceback (most recent call last): File "E:\Python27\lib\site-packages\robotide\__init__.py", line 83, in main _run(inpath, not noupdatecheck, debug_console) File "E:\Python27\lib\site-packages\robotide\__init__.py", line 102, in _run from robotide.application import RIDE File "E:\Python27\lib\site-packages\robotide\application\__init__.py", line 16, in <module> from .application import RIDE, Project File "E:\Python27\lib\site-packages\robotide\application\application.py", line 22, in <module> from robotide.namespace import Namespace File "E:\Python27\lib\site-packages\robotide\namespace\__init__.py", line 16, in <module> from .namespace import Namespace File "E:\Python27\lib\site-packages\robotide\namespace\namespace.py", line 31, in <module> from robotide.publish import PUBLISHER, RideSettingsChanged, RideLogMessage File "E:\Python27\lib\site-packages\robotide\publish\__init__.py", line 123, in <module> from .messages import * File "E:\Python27\lib\site-packages\robotide\publish\messages.py", line 21, in <module> from .messages2 import * File "E:\Python27\lib\site-packages\robotide\publish\messages2.py", line 24, in <module> from robotide.publish import publisher File "E:\Python27\lib\site-packages\robotide\publish\publisher.py", line 24, in <module> from pubsub import pub ImportError: cannot import name pub
Ride to School
Description Many graduate students of Peking University are living in Wanliu Campus, which is 4.5 kilometers from the main campus – Yanyuan. Students in Wanliu have to either take a bus or ride a bike to go to school. Due to the bad traffic in Beijing, many students choose to ride a bike. We may assume that all the students except "Charley" ride from Wanliu to Yanyuan at a fixed speed. Charley is a student with a different riding habit – he always tries to follow another rider to avoid riding alone. When Charley gets to the gate of Wanliu, he will look for someone who is setting off to Yanyuan. If he finds someone, he will follow that rider, or if not, he will wait for someone to follow. On the way from Wanliu to Yanyuan, at any time if a faster student surpassed Charley, he will leave the rider he is following and speed up to follow the faster one. We assume the time that Charley gets to the gate of Wanliu is zero. Given the set off time and speed of the other students, your task is to give the time when Charley arrives at Yanyuan. Input There are several test cases. The first line of each case is N (1 <= N <= 10000) representing the number of riders (excluding Charley). N = 0 ends the input. The following N lines are information of N different riders, in such format: Vi [TAB] Ti Vi is a positive integer <= 40, indicating the speed of the i-th rider (kph, kilometers per hour). Ti is the set off time of the i-th rider, which is an integer and counted in seconds. In any case it is assured that there always exists a nonnegative Ti. Output Output one line for each case: the arrival time of Charley. Round up (ceiling) the value when dealing with a fraction. Sample Input 4 20 0 25 -155 27 190 30 240 2 21 0 22 34 0 Sample Output 780 771
搞学习 知乎:www.zhihu.com 简答题:http://www.jiandati.com/ 网易公开课:https://open.163.com/ted/ 网易云课堂:https://study.163.com/ 中国大学MOOC:www.icourse163.org 网易云课堂:study.163.com 哔哩哔哩弹幕网:www.bilibili.com 我要自学网:www.51zxw
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