Announcements (Search)

Python 3 has been added

by bbi5291 on Dec 30, 2013 - 5:13:44 am UTC
  • (0/0)
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Older IOI tasks have been added!

by Alex on Dec 27, 2013 - 5:29:34 am UTC
  • (6/0)
The PEG judge now contains every single IOI problem since 1994. This does not include interactive problems (which will be added later, when the judge better supports them), but does include those requiring custom graders for many possible outputs. I don't believe any other online judge has a collection that's more complete. cool.gif

If you notice any typos in the problem statements, think there is an issue with the test data/graders, or think the problem value is to high/low, please post a comment.

Also, since the IOI's from pre-1994 used a completely different grading model where programs were tested by hand, the official test data is long lost. Contact me if you are interested in writing test data for any of the IOI 1989-1993 tasks.

A message about copying code

by Alex on Dec 04, 2013 - 1:40:16 am UTC
  • (13/2)
After noticing a particular submission from someone (you know who you are), I feel that this message needs to be heard, particularly by Churchill PEG members. The admins of this site are really not oblivioua. Looking at a submission, we can easily tell whether someone earned the points for a problem legitimately. We realize for many problems on the PEG Judge, solution descriptions or even solution programs can be found online. There is nothing we can do to stop you from giving yourself a hint by, for instance, reading a few sentences of a solution PDF, and then implementing the program on your own.

The problem arises when you copy somebody else's program, change some variables, add a few sporadic comments, and submit it in one go for a perfect score. This is blatantly cheating. We don't really care about public users doing this since it's their own programming skills that they're trying to improve. There are certainly no merits to copy-pasting code all day long to gain imaginary points on a website. However, among rising programmers in PEG who are consistently competing with each other (for ranks, rewards, trips, etc.), points DO mean something. Thus, we must be particularly strict with enforcement of this policy.

It is very unfortunate that not only did you try to illegitimately obtain 50 points through 1 problem while your peers are working so hard to even earn 30 on several, you decided to brag about solving it on your own in the comments. It is even more unfortunate that you chose to do this right after we all discussed proper use of the PEG Judge last Wednesday. In the past, our leaders/teachers would not have hesitated to kick out students for such offenses. For this one time, the score for your submission has been set to zero. It's never happened before (and we don't plan for it to), but if similar events persist, we just might start seeing negative scores for submissions. Let's learn to be grateful that this tool is available for us.

TL;DR - Just get points legitimately; we're reaching a limit on warnings.

Judge restored from yesterday

by Alex on Oct 29, 2013 - 1:43:10 am UTC
  • (1/1)
Submissions and comments from today (Oct 28) were lost due to an issue with the database.
We apologize for the inconvenience. Please remember to always back up your programs locally in case of similar events in the future.

Compilation issues fixed

by bbi5291 on Oct 10, 2013 - 8:10:05 pm UTC
  • (5/0)

Sort by "Date Added" now works sensibly

by bbi5291 on Aug 13, 2013 - 11:27:25 pm UTC
  • (0/0)
The Judge used to not actually keep timestamps on when problems were added, so I had most of them guessed. (For problems in contests, I set it to an hour before the contest began, and for most other problems, I set it to a minute before the earliest submission to the problem.)

Problems added from now on will appear in the correct order. Sorry for the inconvenience.

COCI 2007-2008

by Alex on Jul 30, 2013 - 6:21:52 am UTC
  • (5/0)
All COCI 2007-2008 problems and their statements (including those requiring custom checkers) have been added.

Broken Link

by Alex on Jul 02, 2013 - 8:20:02 am UTC
  • (0/0)
Clicking "My Submissions" in the drop down menu of the logged in username links to[username]
rather than[username],

COCI 2009-2010

by Daniel on Jun 30, 2013 - 5:48:29 pm UTC
  • (1/0)
The test data for all the COCI problems from 2009-2010 has been uploaded to the PEG Judge server.
Edit: All COCI problems from 2009-2010 not requiring custom judges have been added.

Ratings reset

by bbi5291 on Jun 25, 2013 - 7:31:04 am UTC
  • (1/0)
I dropped all the ratings from old "contests" that were really just PEG exercises or imported contests. Ratings were recalculated based on the two public contests held on the Judge so far (one mock DWITE and one mock CCC). For most previously rated users this probably means you're no longer rated; in other cases your rating may have changed.

I hope to hold more contests on the Judge in the future.