Judging System

• contestants view: allows contestants to
  • visualize the problems descriptions;
  • load a source program and submit it as an intended solution for a given problem;
  • ask questions to the judges;
  • read a FAQ page with answers to common questions;
  • access to the full list of questions and corresponding answers from the judges;
  • access the list of submissions that have been made since the beginning of the contest;
  • access the current classification.
• administration view: allows the administrators to
  • setup a new contest, by defining the teams, the passwords for the teams, the set of problems, the test cases and time limits for each problem, the languages used and corresponding compilation commands and flags, duration for the contest, etc.
• judges view: allows the judges to
  • assist in the judging process by validating the results of the automatic judge, thus making the evaluation final. Using this interface, judges can easily re-evaluate submissions if necessary;
  • answer to questions posed by teams;
• public view: allows the general public to:
  • follow the progress of a contest;
  • access the list of submissions;
  • access the current classification;
  • access the contest statistics.

The Mooshak system will run on:

• two synchronized front servers, providing the contestants view,
• up to eight P.IV 3.4GHz with 1.5 GB RAM systems dedicated to running the test cases,
• one synchronized server, providing the admin and judges views,
• one other server, providing the public view.

Access to the system is through login/password authentication. The system has builtin safety measures to prevent users from interfering with the normal progress of the contests. Submissions sent by teams are evaluated by having the corresponding programs compiled and run in a safe-process environment. Programs are only allowed a certain ammount of resources in terms of main memory, disk space and execution time. If a program exceeds any default limit, it is cancelled and a submission message error is produced.
The compilers and compilation commands will be the same on teams machines and automatic judging servers.

A fair number of redundancy schemes will be available.

Working environment

• Hardware: various Pentium based systems, ranking from P.IV 2 GHz with 1 GB RAM to P.IV 3.4 GHz with 1.5 GB RAM, 17''monitor; keyboards have the US "QWERTY" layout, however teams are allowed to bring their own PS/2 keyboards. The contest problems are settled to be run and tested with no disadvantage on the oldest systems.
• Software: Linux Fedora Core 1 with usual goodies: Kde window manager; mozilla browser; emacs, xemacs, vi, ..., text editors; C, C++, Java and Pascal compilers.
  The mozilla browser is pre-configured to be used with the submission system.
  Internet access is restricted only to the required servers.
  An alias is provided for each language compiler with the flags already set as used in the judging server. Next, we list for each language the compilation command, corresponding alias and source file extension that shoud be used:

  Language	Compiler	Command	Alias	Extensions
  C	gcc 3.3.3	gcc -ansi -Wall -Wno-unusued -lm file.c	mygcc	.c
  C++	g++ 3.3.3	g++ -ansi -Wall -Wno-unused -lm file.cpp	myg++	.cpp
  Java	jdk 1.4.2	javac file.java	myjava	.java
  Pascal	freepascal 1.0.10	fpc -v0w file.pas	myfpc	.pas

  The filename you use for your programs is irrelevant for the system. However, file extensions are crucial. The system won't recognize other extensions and won't try to guess the programming language you are using. It assumes that the file extension you give correctly identifies the programming language.

Using the Mooshak system

1. access to page: http://mooshak/~mooshak/;
   you need to go through the authentication process, in principle, just once;
2. select the problem the team is going to solve (A, B, C,..., I);
3. load the source code of your program that solves the problem you selected, and then click on Submit.

Once you have made a submission, the result of the automatic judge should appear almost instantaneously. This result is initially marked as in pending state to indicate that it has to be confirmed by a judge person. Once confirmed, the submission result is marked final.

In about 99% of the cases the automatic judge makes a correct evaluation. We made a great effort to make everything consistent and robust, but problems may arise unexpectedly, such as a system resource failure, a mistake in a test case, etc. You shouldn't worry too much because the system is highly flexible in allowing the judges to re-evaluate submissions without a team beeing penalised for it, and thus undoing whatever went wrong first.

  Please note: any attempt in sending too many adhoc submissions near the end of the contest will be interpreted as misconduct by the judges.

Access to the public view is afforded through the page: http://kelen.polytechnique.fr/mooshak/.

Manuals

  Please note: any attempt in loading documentation pages at an excessive rate will be interpreted as misconduct by the systems administrators and the judges.

Printing your programs

Problem descriptions

Asking questions

Please be considerate to other teams and avoid questions that simply can not be answered (e.g. what is the output of judge's solution for the following input ...).