Here is the editorial (with solutions) for problems 1-4 and problem 6 of UTS Open '15 (final rankings here). jeffreyxiao is bogged down with Spanish at the moment and will supply the editorial and solution for problem 5 as soon as he is able.

Thank you for participating in the UTS Open - we hope to see you again next year!

Update: Kirito wrote an editorial for problem 5.

The solutions to the Mock CCC 2015 can be found here:

Junior: https://accounts.google.com/ServiceLogin?service=wise&passive=1209600&continue=https://drive.google.com/file/d/0Bz8sftGywZGxOHBmRXhINjY5U3M/edit&followup=https://drive.google.com/file/d/0Bz8sftGywZGxOHBmRXhINjY5U3M/edit

Senior: https://accounts.google.com/ServiceLogin?service=wise&passive=1209600&continue=https://drive.google.com/file/d/0Bz8sftGywZGxSzZTMzE2NEhKb2s/edit&followup=https://drive.google.com/file/d/0Bz8sftGywZGxSzZTMzE2NEhKb2s/edit

The PDF generation feature for the DMOJ has been updated to use wkhtmltopdf through a virtual X buffer.

Try it out! https://dmoj.ca/problem/ioi13p4/pdf

Formatting for complex problems should be flawless now.

We've added an API for accessing most public data used by the DMOJ.

You can read the documentation here.

Anything you'd like added to the API, or think we've missed? Please let us know in the comments!

Update 2015-02-15: the contest has been extended to Monday, February 16th, so that those who had plans for Valentine's Day get a chance to write the contest.

Things go awry this Valentine's day when the Ice King kidnaps everyone in the land of Ooo for a wooing session! Try not to get your socks and hat and limbs blown off as you read of the recent events in the Ice Kingdom!

The Valentine's Day 2015 contest will consist of three problems of medium-level difficulty. The contest will run on February the 14th from 12:00AM to 11:59PM EST. Within this window, you will have 3 hours to write the contest.

The problem writer is bobhob314.

Visit the contest page for more details.

The 2015 Canadian Computing Competition is around the corner. Users FatalEagle and Alex have prepared another mock CCC for you to test your might.

• When: The contest window will be between Friday, Feb 13 at noon (EST) and Monday, Feb 16 at midnight (EST). Any time during this period, you may enter the contest and your personalized timer will count down from 3 hours.
• Where: Right here on the DMOJ Judge! Head over to the contests section of the site and click "Join contest" when the time period begins. The contest will also be available on the PEG Judge.
• Format: 5 problems for junior and 5 problems for senior, just like the real CCC. Each problem will be worth 15 points, and each contest is out of 5*15 = 75 points. There will be full-feedback for your submissions, and tie-breaker is the sum of times used to solve problems (although such a metric won't be used on the real CCC).

Analyses will be provided after the contest period. Good luck!

Update: Thank you to all who participated!
Below are the problems for you to solve post-contest:

New Key
Redirection
Golden Lily
Sketchley Park
Aircraft Carrier Akagi
Save Nagato!

On Tuesday, February 10 at 3:30 PM EST we will be hosting the DMOPC '14 February. Anyone with a DMOJ account is welcome to participate, and anyone without one is welcome to register and participate.