Topcoder Java Applet Installation Guide
User Manual: Pdf
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Page Count: 9
Setting up the Applet
●First you have to have JRE (Java Runtime Environment).You can Download the
latest version from here http://java.com/en/download/index.jsp
●Follow this guide to setup the environment for Java.
●Download the Topcoder Applet from here http://topcodr.co/javaarena
●It’s preferred that you move the downloaded file to a folder of its own. Lets call it
“Topcoder Applet”.
●Click on the file to Launch The Applet.
Java Security Warning!
If you get security warning - After installing Java add the Topcoder to exception list:
Windows: Control Panel → Java → Security → Exception List
OSX: System Preferences → Java → Security → Exception List
Linux, UNIX, Solaris, FreeBSD: Open a terminal
Execute the following command: /usr/bin/jdk1.8.0_05/bin/ControlPanel
Replace /usr/bin/jdk1.8.0_05 by the path of your Java installation.
Here is the exception list you have to add:
http://topcoder.com
http://www.topcoder.com
http://arena.topcoder.com
https://topcoder.com
https://www.topcoder.com
https://arena.topcoder.com
Once done try opening the Topcoder Applet again
●Enter your TopCoder Handle (username) and Password.
●You should see the following Screen if you logged in correctly
Setting up KawigiEdit Plugin
This Plugin is very useful and saves a lot of time during contests (SRMs) (Time = Score)
Topcoder doesn’t depend on standard IO as (uva-spoj-codeforces), it depends on a
function inside a class, this function takes the parameters as the input, and returns the
output
Luckily, KawigiEdit does most of this for us, choose on your prefered language from
above (c++ in our case), and get back to the code area down.
We’ll only discuss some of its features and how to Set it up
●Download the plugin : http://topcoder.yajags.com/KawigiEdit_2.1.jar
●It’s preferred that you put the file in the same directory of the Arena (in the
“Topcoder Arena” Folder)
●Start the Topcoder Arena applet (if it’s not already running).
●From the Options menu, choose “Editor”.The Editor Preferences dialog should
come up.
●Click on the “Add” button. A dialog titled “Enter Plugin Information” should pop up.
●Fill in the fields with the following
○Name : “KawigiEdit”
○EntryPoint : “kawigi.KawigiEdit”
●Click On Browse and Navigate to “Topcoder Applet” Folder and Select The
KawigiEdit_x.jar file
●Click Ok and return to the Editor Preferences Dialog.
●Check On the Default Box of the KawigiEdit instead of the Default .
●Click Save and Close.
●Congratulations , you have your KawigiEdit.
Joining an Active SRM
SRMs are scheduled in TopCoder, you can join anyone but you have to register in it
before it starts
Please register 5 mins before the SRM to make sure you are set
To register:
●From the top menu choose Active Contests.
●Select the SRM
●Click On Register
When the SRM begins Enter it
●From the top menu choose Active Contests.
●Select the SRM
●Click On Enter
The SRM consists of 4 Phases
1. Coding Phase : In this phase you’ll be solving the problems just as mentioned
above in the practice
2. Intermission : 5 minutes to take your breath
3. Challenge Phase: You can challenge others code with a test case that you think
his code would fail, you get score if the challenge succeeded else you lose score
4. System Testing Phase : Topcoder System will run extra test cases on all
participants’ code
5. After the system tests finishes go to Tools > Room Summary to see if your code
passed
Practice Problems in previous SRMs
●Open the Applet, from the top menu choose practice problems then choose SRMs
●For example we’ll open the SRM 575 Div2
●Here is what you should see
●Every Room has 3 problems sorted by their difficulty.
●To Open a problem , from the select menu click on the 250 problem for example.
●The Problem will open in a new window
●The problem statement, is composed of
○Problem Statement
○Definition (KawigiEdit handles most of it )
○Constraints : the limits of the input && || other specifications of the input
○Examples
●Topcoder doesn’t depend on standard IO as (uva-spoj-codeforces), it depends on
a function inside a class, this function takes the parameters as the input, and
returns the output
●Luckily, KawigiEdit does most of this for us, choose on your prefered language
from above (c++ in our case), and get back to the code area down.
●You’ll find that KawigiEdit made most of the code for you ,all needed #include ,
the class , the function in it. All you have to do is to solve the problem inside the
function and return the result at last.
●If you are done with your solution and want to test it, there are 2 ways, one that
involves using g++ , and the other one using Visual Studio or Code::Blocks or any
c++ IDE .
●We’ll be using the second one
○Open Code::Blocks and create an empty c++ project and make a cpp source
file
○Copy The source Code from the KawigiEdit to VS.
○Back to the KawigiEdit open the Test Code tab.
○Copy the code in it and add it to the code in VS.
○Run The program ,and this is how it should look like
●It will run the tests for you and will tell you if you have any problem with any
sample test cast.
●The highlighted code,is the code you are going to submit + the includes above.
●Back to the problem window ,to submit your code click submit and you are done
●you may want to compile your code first to make sure you don’t have any errors.
