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Hello, World!

Welcome to the PEG Online Judge. This site was created by members of Woburn Collegiate Institute's Programming Enrichment Group as a resource for competitive programmers everywhere. We also run PEGWiki, a site for information and tutorials of algorithms.

Currently, we have 1101 problems, 396010 submissions, 277 analyses, and support for 15 languages.

If you are new here, register an account and get familiar with the judge by solving A plus B. Alternatively, you can try a random problem that you haven't solved.


Announcements (See All)

Woburn Challenge Online Round 3

by Alex on Feb 15, 2017 - 6:45:16 am UTC
Edit: The contest is over! Many thanks to all of you who participated. The questions have been cloned to the main judge. We will be posting prizewinners and analyses to all of the problems shortly. Check here, as well as our website periodically! Feel free to submit to them for practice while we work on publishing results and analyses. Note that J3 and S1 are the same question, as are J4 and S2. Thus, submissions to J3/J4 are not moved over and junior competitors will have to resubmit them to S1/S2 on the main judge.

Problems: J1, J2, J3/S1, J4/S2, S3, S4

Hope all of you had a restful holiday, because Woburn Challenge is back for round 3! To be eligible for prizes, you must be a Canadian high school student, and must have completed this year's registration form (woburnchallenge.com/register) even if you have participated last year! However, everyone else is welcome to participate as an observer. If you did not participate in round 1 and 2, it's not too late to sign up now!

2016-17 Online Round 3

When: Sunday, February 19th, 2017 from 2:00 pm to 5:00 pm ET
Where: The PEG Judge interface (wcipeg.com/contests)
Format: 2 divisions, 3 hours, 4 problems, infinite submissions, and live feedback.
Prizes:
  • Top 3 Junior division winners: $50, $25, $25
  • Top 5 Senior division winners: $200, $100, $50, $50, $50
Full format and rules can be found at: woburnchallenge.com/contest
For more details, visit woburnchallenge.com. For questions, email [email protected].

Finally, please forward this to your friends (especially at other schools) who are interested in computer programming -- we want to get more students involved!

Good luck and enjoy the problems!

Woburn Challenge round 2 results are now available!

by Alex on Dec 12, 2016 - 1:03:33 am UTC
Thank you for joining us for round 2 of this year’s Woburn Challenge! Problems, solutions, and test data are now posted here.

As you could probably tell, we are cranking up the difficulty as the 2016-17 contest season progresses. While we expect you to be constantly practicing, we are also working to improve the contest experience from our end. In particular, we are aware that the judge was slow to provide live feedback due to the quantity of submissions being queued. In future rounds, improvements to the site and server will be made to help prevent this issue.

The senior division prizewinners are:
  • Brian Chau of Woburn Collegiate Institute ($200)
  • William Wen of Pierre Elliott Trudeau High School ($100)
  • Jason Yuen of Pierre Elliott Trudeau High School ($50)
  • Zixiang Zhou of University Heights Public School ($50)
  • Andrew Lin of University Hill Secondary School ($50)
The junior division prizewinners are:
  • Allan Xu of Woburn Collegiate Institute ($50)
  • Justin Pu of William Lyon Mackenzie Collegiate Institute ($25)
  • William Fung of Richmond Hill High School ($25)
Congratulations! These prizes will be distributed as Visa gift cards, and we will be contacting your teachers shortly about sending them out. Remember that we will have many prizes in the remaining rounds of the year, so keep on practicing!

Woburn Challenge Online Round 2

by Alex on Nov 30, 2016 - 11:11:26 pm UTC
Edit: The contest is over! Many thanks to all of you who participated. The questions have been cloned to the main judge. We will be posting prizewinners and analyses to all of the problems shortly. Check here, as well as our website periodically! Feel free to submit to them for practice while we work on publishing results and analyses. Note that J3 and S1 are the same question, as are J4 and S2. Thus, submissions to J3/J4 are not moved over and junior competitors will have to resubmit them to S1/S2 on the main judge.

Problems: J1, J2, J3/S1, J4/S2, S3, S4

This year's Woburn Challenge is back for round 2! A reminder that this year's online contests are running on Sundays! To be eligible for prizes, you must complete this year's registration form (see woburnchallenge.com/register) even if you have participated last year. If you have an existing PEG Judge username, you can continue using it. All Canadian high school students are eligible for prizes (you must be first registered through the aforementioned website), but everyone with a PEG Judge account is welcome to participate. If you did not participate in round 1, it's not too late to sign up and participate!

2016-17 Online Round 2

When: Sunday, December 11th, 2016 from 2:00 pm to 5:00 pm ET
Where: The PEG Judge interface (wcipeg.com/contests)
Format: 2 divisions, 3 hours, 4 problems, infinite submissions, and live feedback.
Prizes:
  • Top 3 Junior division winners: $50, $25, $25
  • Top 5 Senior division winners: $200, $100, $50, $50, $50
Full format and rules can be found at: woburnchallenge.com/contest
For more details, visit woburnchallenge.com. For questions, email [email protected].

Finally, please forward this to your friends (especially at other schools) who are interested in computer programming -- we want to get more students involved!

Good luck and enjoy the problems!

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