Glenforest Winter Open is back! Engage in one of our two contests both happening Monday, December 14th, starting 3:30pm EST. The junior contest will last 3 hours until 6:30pm EST and the senior contest will run one hour longer, until 7:30pm EST.

The senior contest may be significantly harder than the junior contest, and is recommended for those with a stronger handle on algorithms. You may choose to switch contests if you find one too easy or one too hard! Editorials will be released after the contest, and will be accessible on our organization page (along with past editorials as well).

TopCoder is hosting an SRM Monday, Nov 30th at 9PM EST.

Details: https://community.topcoder.com/tc?module=MatchDetails&rd=16624

Thanks to everyone who participated in this month's DMOPC!

Congratulations to the winners:

1. mexmans
2. pyrexshorts
3. Butane
4. d
5. Solipsist

We hope you enjoyed the contest! We've added some extra "bonus" questions; feel free to comment and discuss them for extra practice. Lastly, if you have the time, we ask that you please fill out a short survey regarding your experience with this DMOPC to help us improve future contests.

See you next month!

On Tuesday, December 8, we'll be hosting the December 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 12PM EST and 9PM EST. Please see the contest page for more details.

See you soon, and good luck!

Thanks to everyone who participated in this month's contest! Congratulations to the winners:

1. d
2. pyrexshorts
3. bugday
4. Solipsist
5. awaykened

Feel free to post comments and ask questions.

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

Note: Some cheaters were discovered post-contest, and have been removed from ratings. These users are permanently banned from submitting to the problem in question. We will re-rate contests as necessary if more cheaters are discovered, whether in the most recent November contest or any of our previous contests. If you wish to report an offending submission, please email dmopc - at - dmoj.ca.

On Tuesday, November 10, we'll be hosting the November 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 12PM EST and 9PM EST. Please see the contest page for more details.

See you soon, and good luck!

The contest is now over. Thanks to everyone who participated, we've broken our previous record of participants for the DMOPC! You may access the scoreboard here.

Congratulations to the winners!

1. trophies (perfect score)
2. Butane (perfect score)
3. pyrexshorts (perfect score)
4. jeffreyxiao
5. d

Finally, if you have the time, we ask that you please fill out a short survey regarding your experience with this DMOPC to help us improve future contests.

On Tuesday, October 13, we'll be hosting the first Don Mills Open Programming Competition of the 2015-2016 school year!

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

We'll be using a new format for the competition this year. The DMOPC will run as a 3-hour virtual contest, which will allow contestants to participate in any 3-hour window between 12PM EDT and 9PM EDT. Please see the contest page for more details.

See you soon, and good luck!

With the start of a new contest season, we thought it was a perfect time to update the look and features of this site to be both more modern and more usable.

Aside from the macro changes (new header, etc.), here are a couple of things you may not have noticed that we hope will make your life better:

• You can now be part of multiple organizations.
• A nice "Copy" button for problem sample input and output has been added. Surprisingly useful.
• C/++ compiler warnings and errors are now colored (Java will follow).

ccc07j1.cpp:10:32: error: expected primary-expression before ‘||’ token
     else if (y <= z && y >= x) || (y <= x && y >= z))) printf("%d", y);
                                ^

• The site now scales properly to large screens.
• Contest start/end date, length and contest window are displayed in a more readable format.

• The contest timer looks better, and no longer overlaps the Submit button.
• A contest rating chart has been added on user pages.
• <input id="hin" style="vertical-align: middle; display: none;" type="checkbox"><label for="hin" style="vertical-align:middle">You can now</label><input id="in" style="vertical-align:middle" type="checkbox"><label for="in" style="vertical-align:middle">Hide problems I've solved on another user's problem page.</label>
• Improved problem searching: form auto-submits so you don't need to click "Go" every time, and the table may be sorted by state now.
• You can also search problems if you're not logged in now. For some reason, this wasn't possible before.

Most importantly of all, we are interested in your opinion on the changes. Love them? Hate them? Want a feature? Let us know!
Found a bug? Perfect! Report it on Github.

TopCoder is hosting an SRM Thursday, July 23rd at 11AM EST.

Details: https://community.topcoder.com/tc?module=MatchDetails&rd=16512

TopCoder is hosting an SRM Thursday, July 9th at 9PM EST.

Details: http://community.topcoder.com/tc?module=MatchDetails&rd=16511

On Tuesday, May 5 at 3:30 PM EST we will be hosting the DMOPC '14 May Contest.

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

See you soon, and good luck!

April 20th, 2015. The day that Mr. Benum the CS teacher vanished into thin air. It was apparent that Mr. Benum would not be back for a while, so a replacement teacher showed up. He went by "Mr. Venom". A sketchy name, but there's more. He wasn't listed on any teacher database we hacked up; he had no online presence. Even stranger, Mr. Benum had not notified anyone of his absence. And Mr. Venom randomly applied for a job at Thornhill S.S. on the exact day that Mr. Benum disappeared.

No one suspected a thing, except for the members of the computer club. They knew that some shady dealings had occurred, and that they now had to save Mr. Benum from evil forces. Can they rescue Mr. Benum in time to celebrate on this very special day?

Help guide the young investigators rescue their teacher and defeat the evil Mr. Venom in the TSOC '15 #2 Contest!

Problems were authored this time around by gah111, BMP, bobhob314, and kobortor.

The contest will run for three days starting on April 20th, 2015. You will have three hours to complete the problems. There will be six problems of increasing difficulty, along with one bonus problem.

This round will be rated for all participants.