女子高生プログラマーの大バトル！〜コボール文明の逆襲〜

This problem will decide world's fate...

Who's going to challenge to Coboor? (Choose your character)

Your code will save the world!?

Choose one of your character. And challenge Coboor Virus problem.If you can solve this problem, you can save their world.Could they save the world?! And which girl do you choose?

Language(Java,C,C++C#,PHP,Ruby,Python,Perl,JavaScript). Your code will be tested by multiple test cases. You will get a score based on the number of the successful answers, and running time.

* We will use one test case for one code execution.

POH is a public programming challenge. There is no time limit.
You can try these challenges multiple times.
And also you can publish your code in public. (Blog, Twitter, Facebook, GitHub)

How to play

		Write code
		Compile and test the code
		Submit
		Then, we will show your score!
		Publish the model answer (You must have registered to paiza)

*Your code may published to the others with your nickname.

Event schedule,

Schedule

Submission Period: Sep 1 (Thu) - Oct 6 (Thu)
Examination period: Oct 7 (Wed) - Oct 13 (Thu)
Result announcement: Oct 14 (Wed)

Prize

6 sets of Momoya "Gohandesuyo" for 3. Intel Edison Kit for Arduino for 1. Winner will be chosen by lottery and only Japanese residents are eligible for the prize.

Events Terms

　In this campaign, problems open to the public, you can try these challenges without membership registration. However, when submitting, it is assumed that you are familiar with the following important notice.
*Important Points*
(1) Membership registration is not required, but it is necessary to register an email address. However, we will not use this email address for any other purposes outside of this campaign.
(2) Existing members may also take these challenges in this campaign, but the result has no effect on personal skill ranks (paiza rank), please note this in advance.
(3) The copyright of submitted code belongs to the examinee, but we will make that code open to the public on our website, SNS, etc., and may use it freely. This complies fully with the rules of use, in Article 5, section 2.
(4) Your submitted code may not be completely preserved. You should preserve your submitted code by yourself.

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Extra event

paiza オンラインハッカソンVol.6+ Matsue Ruby conference collaboration event!

【POH 6+】Matsue Ruby conference collaboration event!

Paiza is a coding career change site for IT/Web engineers.

Expected coding period is 20 minutes! Supported languages are Java, C, C++, C#, PHP, Ruby, Python, Perl, and JavaScript.

Depending on you scores, you can skip document screening process and can have casual interview, a job offer may be possible by companies seeking workers. Until, applying, results are not reported to companies seeking workers.

The thorough collection of development techniques, development environment, tools used, method of evaluation and supervisor profiles necessary for job selection of engineers and programmers.

Checking code with several test cases, calculating scores by memory usage and execution speed. At the time of an interview, we will ask about the source code.

Problems are organized by rank S,A,B,C,D. Problems can be worked on one at a time. The best algorythym in the time limit!

We update problems every week! It is possible to challenge problems of the same rank when updated. It is also optimum to practice skill-ups.

Our clients

If you register (login) for paiza, you can download wallpapers!

paiza User regist or Login You can download wallpapers!

Wallpaper 1

Wallpaper 2

Wallpaper 3

Summary chart

Summary by language

The number of submissions, and the number of selection for each route.

Language	The number of submission	Kirishima selected	Rio selected	Tsubamae selected
Java	963 submission	362 select	357 select	244 select
PHP	670 submission	200 select	298 select	172 select
Ruby	969 submission	246 select	470 select	253 select
Python2	787 submission	234 select	352 select	201 select
Perl	213 submission	57 select	101 select	55 select
C	979 submission	328 select	426 select	225 select
C++	1195 submission	363 select	560 select	272 select
C#	727 submission	238 select	337 select	152 select
JavaScript	301 submission	92 select	123 select	86 select
Objective-C	21 submission	4 select	11 select	6 select
Scala	73 submission	39 select	19 select	15 select
Go	51 submission	21 select	21 select	9 select
Haskell(Beta)	100 submission	39 select	32 select	29 select
CoffeeScript(Beta)	14 submission	3 select	5 select	6 select
Bash(Beta)	77 submission	7 select	20 select	50 select
Erlang(Beta)	12 submission	5 select	5 select	2 select
R(Beta)	20 submission	4 select	11 select	5 select
COBOL(Beta)	49 submission	8 select	10 select	31 select
VB(Beta)	12 submission	3 select	3 select	6 select
F#(Beta)	10 submission	3 select	4 select	3 select
Python3	160 submission	54 select	67 select	39 select
Clojure(Beta)	18 submission	7 select	6 select	5 select
D(Beta)	49 submission	15 select	23 select	11 select

（2015/10/13Update）