Announcements (Search)

CCO 2016 Problems Added

by Alex on May 14, 2016 - 9:57:47 pm UTC
  • (4/0)

Woburn Challenge Finals Results

by Alex on May 07, 2016 - 3:37:23 am UTC
  • (0/0)
Thank you all who joined us for the Woburn Challenge 2015-16 on-site finals this afternoon! After an unbelievably tight race, Richmond Green Secondary School managed to edge out the valiant competition from Don Mills Collegiate Institute (by a mere 1 point within the last 6 minutes of the contest!) to ultimately secure 1st place in the senior division. Meanwhile, Thornhill Secondary School clinched their own champion spot in the junior division. Though this was arguably our toughest contest of the year, we still believe that there was something there for everyone.

The contest problems have been cloned to the main judge: J1, J2, J3/S1, J4/S2, J5/S3, S4, S5.
Problems, solutions, and test data will be posted shortly to this page.

The senior division prizewinners are:
  • Bill Zheng, Josh Jung, and Henry Gao of Richmond Green Secondary School ($250)
  • Timothy Li, Patrick Au, and Kevin Wang of Don Mills Collegiate Institute ($200)
  • Jason Yuen and William Wen of Pierre Elliott Trudeau High School ($150)
  • Jason Kuo and Robert Cummings of A. Y. Jackson Secondary School ($75)
The junior division prizewinners are:
  • Max Li and Alexander Kursell of Thornhill Secondary School ($150)
  • Kevin Wang and Saswata Gupta of Glenforest Secondary School ($100)
  • Alexander Shah and Callum Moseley of Richmond Hill High School ($75)
Congratulations! We would love to hear your feedback about how to improve for next year, so please send them to [email protected] That said, we hope you enjoyed the last round of the season and look forward to bringing you many more exciting challenges in the years to come!

Woburn Challenge round 4 results are now available!

by Alex on Apr 13, 2016 - 2:14:15 am UTC
  • (0/0)
What a great first year of the Woburn Challenge relaunch! Thank you to everyone for participating in the online contests and helping us revive this meaningful computer science tradition. We hope you found our problems to be both fun and challenging. For the future, we hope to incorporate all the feedback you have sent us to make these challenges an even more engaging experience. Finally, we ask you to please help spread the word about the contest during the next season.

Click here for full results to the contest. Problems, solutions, and test data are now available here.

The senior division prizewinners for this round are:
  • Timothy Li of Don Mills Collegiate Institute ($200)
  • Jason Yuen of Pierre Elliott Trudeau High School ($100)
  • Ahmed Sabie of Glenforest Secondary School ($50)
  • Jeffrey Xiao of University of Toronto Schools ($50)
  • Bill Zheng of Richmond Green Secondary School ($50)
The junior division prizewinners for this round are:
  • Max Li of Thornhill Secondary School ($50)
  • John Phillips of Lisgar Collegiate Institute ($25)
  • Alexander Kursell of Thornhill 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 that we will have many prizes in the finals as well as for next year, so keep on practicing!

Students who have qualified their schools for the final on-site round on Friday May 6th, will receive an email shortly with instructions. Teacher contacts listed by these students will be sent instructions on registration, and students should confirm with their teachers.

Woburn Challenge Online Round 4

by Alex on Mar 29, 2016 - 9:39:20 pm UTC
  • (0/0)
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!

Edit 2: The contest problems have been posted to (woburnchallenge.com/past-contests) and also cloned to the main judge. 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, so submissions to J3 are not moved over and junior competitors will have to resubmit them to S1 on the main judge.

Junior Problems: J1, J2, J3, J4
Senior Problems: S1, S2, S3, S4

The 4th and final online round is here! The format will be exactly like the first three round (possibly with different problem weightings). If you didn't participate in the previous rounds, it is not too late to jump in now. New competitors can read more about the contest and register at woburnchallenge.com/register. If you have already registered through this process in the earlier rounds, you do not have to do it again. Once again, 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.

Online Round 4

When: Friday, April 8th, 2016 from 4:00 pm to 7:00 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].

Good luck and enjoy the problems!

CCOQR 2016 Problems Added

by Alex on Mar 09, 2016 - 11:44:06 am UTC
  • (1/0)

CCC 2016 Problems Added

by Alex on Feb 22, 2016 - 8:34:17 am UTC
  • (2/0)
Access them here!

Junior Problems
J1: Tournament Selection
J2: Magic Squares
J3: Hidden Palindrome
J4: Arrival Time
J5: Tandem Bicycle

Senior Problems:
S1: Ragaman
S2: Tandem Bicycle
S3: Phonomenal Reviews
S4: Combining Riceballs
S5: Circle of Life

Woburn Challenge round 3 results are now available!

by Alex on Feb 16, 2016 - 5:23:51 am UTC
  • (1/0)
Thanks to all of you who took part in round 3, new and returning competitors alike! This round proved to be a bit rougher than usual, both on your end and ours. To start, there were no perfect scorers in either division. Although the first three problems of both divisions had many wonderful full and partial solutions, the last problems seemed to have perplexed everybody. Indeed, getting 100% on either of them them required a fair bit of tricky preprocessing. On the other hand, we also did run into some issues with the problem statements and test data. The issues have all been addressed in comments to the corresponding problems on the judge. Although we strongly believe that these issues had a negligible effect on the overall results, we nonetheless promise to be more careful in the future.

Click here for full results to the contest. Problems, solutions, and test data are now available here.

The senior division prizewinners for this round are:
  • Timothy Li of Don Mills Collegiate Institute ($200)
  • Jeffrey Xiao of University of Toronto Schools ($100)
  • Jason Yuen of Pierre Elliott Trudeau High School ($50)
  • Bill Zheng of Richmond Green Secondary School ($50)
  • Weiwei Zhong of Glenforest Secondary School ($50)
The junior division prizewinners for this round are:
  • Jonathan Chang of Don Mills Collegiate Institute ($50)
  • Allan Xu of Woburn Collegiate Institute ($25)
  • Christopher DeGuzman of Glenforest Secondary School ($25)
Congratulations to all of you! These prizes will be distributed as Visa gift cards, and we will be contacting your teachers shortly about sending them out. If you haven't won a prize, keep on practicing! We have many more prize opportunities for you throughout the year.

Woburn Challege Online Round 3

by Alex on Feb 12, 2016 - 5:19:06 pm UTC
  • (0/0)
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!

Edit 2: The contest problems have been posted to (woburnchallenge.com/past-contests) and also cloned to the main judge. Feel free to submit to them for practice while we work on publishing results and analyses.

Junior Problems: J1, J2, J3, J4
Senior Problems: S1, S2, S3, S4

Round 3 is here! Sorry for this late announcement on the judge. In the future, just make sure to check in on our website and your emails for more punctual updates. The format will be exactly like the first two round (possible with different problem weightings). If you didn't participate in the last round(s), it is not too late to jump in now. New competitors can read more about the contest and register at woburnchallenge.com/register. If you have already registered through this process in rounds 1 or 2, you do not have to do it again. Once again, 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.

Online Round 3

When: Friday, February 12th, 2016 from 4:00 pm to 7:00 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].

Good luck and enjoy the problems!

A word on sockpuppets

by jargon on Jan 19, 2016 - 12:48:11 am UTC
  • (12/0)
Sockpuppeting is not an acceptable practice. Creating new accounts for the sole purpose of voting posts up or down is not permitted. When there were only one or two, that wasn't a big deal. But this is ridiculous, guys. I found about 20 sockpuppet accounts today.

Moving forward, I'll be deleting any sockpuppet accounts I find. We are able to link sockpuppets to main accounts. Be warned: your main account may suffer sanctions, including temporary or permanent bans from the site.

Woburn Challenge round 2 results are now available!

by Alex on Dec 14, 2015 - 8:31:19 pm UTC
  • (0/0)
Thank to all of you who took part in round 2, new and returning competitors alike! Problems, solutions, and test data are now available in the "Past Contests" section of this site. With our experience from the previous contest, we’ve rounded out the edges to make this one much smoother for everyone involved. We hope you enjoyed the Star Wars themed storylines that were prepared in tribute to the imminent release of The Force Awakens. While the plot of the film remains to be unveiled, we dare say that we’ve at least tried our hands at some bold forecasting in problems J4 and S4.

Click here for full results to the contest. Problems, solutions, and test data are now available here.

The senior division prizewinners for this round are:
  • Timothy Li of Don Mills Collegiate Institute ($200)
  • Leo Feng of Vincent Massey Secondary School ($100)
  • Spencer Whitehead of Lisgar Collegiate Institute ($50)
  • Ahmed Sabie of Glenforest Secondary School ($50)
  • Jeffrey Xiao of University of Toronto Schools ($50)
The junior division prizewinners for this round are:
  • Christopher DeGuzman of Glenforest Secondary School ($50)
  • William Huang of Woburn Collegiate Institute ($25)
  • Siddhant Jain of University of Toronto Schools ($25)
Congratulations to all of you! These prizes will be distributed as Mastercard gift cards, and we will be contacting your teachers shortly about sending them out. If you haven't won a prize, keep on practicing! We have many more prize opportunities for you throughout the year.