The Woburn Challenge 2018 on-site finals was one for the books! We witnessed 25 teams from 13 schools battle it out for the coveted title of Woburn Challenge Champion. In the end, team William Lyon Mackenzie C.I. were victors of the junior division, narrowly inching out team 4 from Churchill Heights P.S. by a time penalty of 10 short minutes. Unfortunately, we were struck by the test data gremlins today. Due to incorrect data for problem J5/S3, Joey Yu and Zixiang Zhou are declared the conjoint champions of the senior division! The corrected version of the problem and data has been copied to the main judge, where in-contest submissions have been rejudged.

The senior division prizewinners are:
[list][*][b]Joey Yu[/b] of Thornhill Secondary School ($250)
[*][b]Zixiang Zhou[/b] of University Heights Public School ($250)
[*][b]Brian Chau[/b] of Woburn Collegiate Institute ($150)[/list]The junior division prizewinners are:[list][*][b]Yi Deng[/b], [b]Evan Zhang[/b], and [b]Jeffrey Gao[/b] of William Lyon Mackenzie Collegiate Institute ($150)
[*][b]Aaron Tang[/b] and [b]Robert Chung[/b] of Churchill Heights Public School ($100)
[*][b]Bill Hu[/b], [b]David Tang[/b], and [b]Andrew Marin[/b] of University of Toronto Schools ($50)[/list]Congratulations! For all online-round prizewinners who could not join us today, we will be getting in contact with your teachers shortly about sending your prizes by mail. We truly hope that you enjoyed tackling all the problems which we have prepared with love. Thanks to all the helping hands that made this event possible, as well as contestants and teachers alike, who stayed with us through to the end of the season. 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 next year!

All of the problems have been cloned to the main judge and can be found here: [url=http://wcipeg.com/problem/wc17fj1]J1[/url], [url=http://wcipeg.com/problem/wc17fj2]J2[/url], [url=http://wcipeg.com/problem/wc17fs1]J3/S1[/url], [url=http://wcipeg.com/problem/wc17fs2]J4/S2[/url], [url=http://wcipeg.com/problem/wc17fs3]J5/S3[/url] (corrected!), [url=http://wcipeg.com/problem/wc17fs4]S4[/url], [url=http://wcipeg.com/problem/wc17fs5]S5[/url].
Full results, problems, and solutions are now posted at: [url=http://woburnchallenge.com/past-contests/]woburnchallenge.com/past-contests[/url]

Thank you for joining us in our fourth online round, new and returning participants alike. Our anticipation for the premiere of [i]Avengers: Infinity War[/i] is surpassed only by our anticipation for the finals next month! Problems, solutions, and test data are now posted [url=http://woburnchallenge.com/past-contests/]here[/url].

The senior division prizewinners are:
[list][*][b]Brian Chau[/b] of Woburn Collegiate Institute ($100)
[*][b]Zixiang Zhou[/b] of University Heights Public School ($50) 
[*][b]Alex Xu[/b] of White Oaks Secondary School ($25)
[*][b]Joey Yu[/b] of Thornhill Secondary School ($25)
[*][b]Ava Pun[/b] of Marc Garneau Collegiate Institute ($25)
[*][b]Henning Jiang[/b] of Vincent Massey Secondary School ($25)
[*][b]Sunny Lan[/b] of Richmond Hill High School ($25)
[*][b]Andrew Tang[/b] of Erindale Secondary School ($25)[/list]The intermediate division prizewinners are:
[list][*][b]Michael Huang[/b] of Bell High School ($50) 
[*][b]Aaron Tang[/b] of Churchill Heights Public School ($25)
[*][b]Yi Deng[/b] of William Lyon Mackenzie Collegiate Institute ($25)
[*][b]Evan Zhang[/b] of William Lyon Mackenzie Collegiate Institute ($25)[/list]Finally, a job well done to the top Junior finishers with perfect scores: [b]Henry Guo[/b] of A.Y. Jackson S.S., [b]Michael Sheinman[/b] of Grimsby S.S., [b]Eric Gu[/b] of Glenforest S.S., and [b]Robert Chung[/b] of Churchill Heights P.S. To all you juniors who are doing so well – we suggest moving yourself up to intermediate next year for an even greater challenge!

Congratulations! These prizes will be distributed as Visa gift cards during the on-site finals in May. Do not fret if you may not be able to make the final round in person – we will mail your prize to you afterwards.

[b]P. S.[/b] The date and location of the finals will be released during the week, when invitations will also be distributed. Be on the lookout!

[b]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 questions are shared between divisions. In particular, submissions to all intermediate problems are not moved over and intermediate competitors will have to resubmit them on the main judge.[/b]

[b]Problems:[/b] [url=http://wcipeg.com/problem/wc174j1]J1[/url], [url=http://wcipeg.com/problem/wc174j2]J2[/url], [url=http://wcipeg.com/problem/wc174j3]J3/I1[/url], [url=http://wcipeg.com/problem/wc174j4]J4/I2[/url], [url=http://wcipeg.com/problem/wc174s1]I3/S1[/url], [url=http://wcipeg.com/problem/wc174s2]I4/S2[/url], [url=http://wcipeg.com/problem/wc174s3]S3[/url], [url=http://wcipeg.com/problem/wc174s4]S4[/url]

The end is nigh. Let's see what you've got in the last round of the year.

To be eligible for prizes, you [b]must[/b] complete this year's registration form (see [url=http://woburnchallenge.com/register]woburnchallenge.com/register[/url]) [b]even if you have participated last year[/b]. If you have already completed in rounds 1 to 3, you do not need to do so again. 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.

[b]2018 Online Round 4[/b]

[i]When:[/i] [b]Friday, April 20th, 2018 from 3:30 pm to 6:30 pm ET[/b]
[i]Where:[/i] The PEG Judge interface ([url=http://wcipeg.com/contests]wcipeg.com/contests[/url])
[i]Format:[/i] 3 divisions, 3 hours, 4 problems, infinite submissions, and live feedback.
[i]Prizes:[/i]
[list][*] Top 8 Senior division winners: [b]$100, $50, $25, $25, $25, $25, $25, $25[/b]
[*] Top 4 Intermediate division winners: [b]$50, $25, $25, $25[/b][/list]Full format and rules can be found at: [url=http://woburnchallenge.com/contest]woburnchallenge.com/contest[/url]
For more details, visit [url=http://woburnchallenge.com]woburnchallenge.com[/url]. For questions, email [url=mailto:[email protected]][email protected][/url].

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!

[b]P.S. Just a heads up that the on-site finals (by invitation) will take place in the middle of May. We have our sights set on Sunday, May 13th but this remains to be finalized. More details will be given after the 4th round is over, when invitations will be sent out.[/b]