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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, 402306 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 4

by Alex on Mar 20, 2017 - 3:46:59 am UTC
Are you ready for the last round of the year? 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. Remember that this is the final online round which can help you and your school secure a position at our invitational finals in May!

2016-17 Online Round 4

When: Sunday, April 9th, 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 3 results are now available

by Alex on Feb 28, 2017 - 2:57:15 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.

This contest proved to be one of our toughest yet, with the third problem of the senior division proven to be especially perplexing due to its ad-hoc nature. You may also have noticed that we decided to provide a kick to the junior division’s difficulty. The reason of course, is to keep all of you (even juniors!) on your toes and habitually challenged!

The senior division prizewinners are:
  • Jason Yuen of Pierre Elliott Trudeau High School ($200)
  • Joey Yu of Thornhill Secondary School ($100)
  • William Wen of Pierre Elliott Trudeau High School ($50)
  • Leo Feng of Vincent Massey Secondary School ($50)
  • Brian Chau of Woburn Collegiate Institute ($50)
The junior division prizewinners are:
  • Arsh Raza of William Lyon Mackenzie Collegiate Institute ($50)
  • Justin Pu of William Lyon Mackenzie Collegiate Institute ($25)
  • Henning Jiang of Vincent Massey Secondary 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 to keep on practicing, since we still have many prizes in the remaining online round, as well as the invitational finals!

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!

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