As the academic year comes to an end, we'll be holding our final DMOPC in the form of the Don Mills Programming Gala.

This event will take place at Don Mills C.I. on Tuesday, April 24^th.

The contest will be split into three divisions of increasing difficulty, with prizes awarded to the top competitors. For interested competitors unable to attend the on-site event, we will also be hosting mirrors of the divisions, open for anyone to participate in.

Space is limited, so sign up soon! More details and registration options may be found here. You can find the results of last year's DMPG here.

Thanks for participating in the DMOPC '17 March contest!

The winners are:

1. xiaowuc1 (perfect score)
2. tankturtle
3. y0105w49
4. lg52931
5. azneye

Editorials for each of the problems will be uploaded to the respective problem pages.

We hope you enjoyed the contest, and see you next year!

On Tuesday, March 13th, we'll be hosting the March Don Mills Open Programming Contest!

Anyone with a DMOJ account is welcome to participate, and anyone without one is welcome to register and participate.

Contestants may participate in any 3-hour window between noon EDT of Mar. 13th and noon EDT of Mar. 14th. Please see the contest page for more details.

See you soon!

Thanks for joining us at TLE February. Unfortunately, there was a error with 6th problem in the contest. kobortor sincerely apologizes for this mistake. If you feel like you have been significantly impacted by this error, please message @kobortor on the DMOJ slack.

Meanwhile, congratulations to the winners of the contest:

1. y0105w49
2. r3mark
3. thebes
4. PlasmaVortex
5. Injust

Once again, we apologize for the mistake on problem 6, and we hope that you join us again for TLE in March.

We're excited to invite you to the sixth Thorndeau Logic Evaluation of the 2017-18 school year! The TLE '17 February contest will be a 3-hour virtual contest, which will allow contestants to participate in any 3-hour window from 12:00 PM EST, February 23, 2018 to 12:00 PM EST, February 24, 2018. Please see the contest page for more details.

All problems from this year's CCC have been added. You may access them here.

Editorials for most problems can be found on their respective pages — please remember to use these editorials only when stuck, as copy-pasting code from them will see you permanently banned from submitting that problem.

Hope you enjoyed this year's CCC!

Thanks for participating in the DMOPC '17 February contest!

The winners are:

1. xiaowuc1 (perfect score)
2. y0105w49
3. Eliden
4. pmnox
5. azneye

Editorials for each of the problems are in the process of being uploaded to the respective problem pages.

We hope you enjoyed the contest, and see you next month!

On Tuesday, February 20th, we'll be hosting the February Don Mills Open Programming Contest!

Anyone with a DMOJ account is welcome to participate, and anyone without one is welcome to register and participate.

Contestants may participate in any 3-hour window between noon EST of Feb. 20th and noon EST of Feb. 21th. Please see the contest page for more details.

See you soon!

We welcome you to this year's Valentine's Day Contest!

Unfortunately, due to the date of the Canadian Computing Contest being on the 14th, the Valentine's Day Contest will be running on the 11th of February. This contest will have cuteness and love themed problems to help contestants enjoy this celebration of love. Because the CCC is coming up, the Valentine's Day Contest will be in CCC format, with two divisions, with five problems each to solve in 3 hours. The window will open at 9AM EST on the 11th and will run till midnight.

We'll be running both junior and senior divisions.

Problem setters for this contest are imaxblue, kipply and xiaowuc1.

The CCC is rapidly approaching, and so it's time for this year's Richmond Green Programming Contest to help you prepare!

The RGPC '18 will be a 3-hour virtual contest, which will allow contestants to participate in any 3-hour window from 12:00 AM EST, February 10, 2018 to 12:00 AM EST, February 12, 2018. Please see the contest page for more details.

Good luck on both the RGPC and the CCC!

We're excited to invite you to participate in a series of contests that will emulate the Canadian Computing Competition! These contests are being produced by ksun48, rpeng, xiaowuc1, and y0105w49 with the intended audience being any student who wishes to practice for the CCC.

All of these contests will be similar in format to the CCC — there will be a junior division and senior division with problems spanning the difficulty of the CCC. All of these contests are unrated.

The first contest will go live on January 29th, 2018 and be open for 72 hours. As with the regular CCC, the contest will be a 3-hour virtual contest which will allow contestants to participate in any 3-hour window for those three days.

We will be producing a set of five such contests from now until CCC. We wish everyone writing the CCC good luck on our contests and on the CCC!

Thanks for participating in the TLE '17 January contest!

The winners are:

1. y0105w49 (perfect score)
2. ksun48
3. ecnerwal
4. xiaowuc1
5. tmwilliamlin168

Editorials for each of the problems will be uploaded to the respective problem pages.

We hope you enjoyed the contest, and see you next month!

We're excited to invite you to the fifth Thorndeau Logic Evaluation of the 2017-18 school year!

The problem writers/testers of this round are rpeng, kobortor, ZQFMGB12, and d.

Note that this will be the last TLE before the Canadian Computing Competition, so give it your all!

The TLE '17 January contest will be a 3-hour virtual contest, which will allow contestants to participate in any 3-hour window from 12:00 PM EST, January 26, 2018 to 12:00 PM EST, January 27, 2018. Please see the contest page for more details.

See you soon!

Thanks to everyone who participated in the New Year's Contest! We hope that you enjoyed the contest! Congratulations to the winners:

1. xyz111 (perfect score)
2. jerrym
3. radoslav11
4. y0105w49
5. pmnox
6. REEmark
7. fanache99
8. azneye
9. ksun48
10. Rafbill

Editorials have been uploaded to their respective problem pages.

Happy New Year!

We hope everyone's been enjoying their winter break because it's about to get better!

On January 1, we will be hosting DMOJ's own New Year's 2018 contest. Please see the contest page for details.

Anyone with a DMOJ account is welcome to participate, and anyone without one is welcome to register and participate.

See you soon, good luck, and Happy Holidays from all of the DMOJ crew!