Google Code Jam 2019 Qualification Round will start on April 5 at 23:00 UTC and last for 27 hours. Here is the official announcement:

Hi everyone,

Code Jam is back for its 16th year, kicking off with the Qualification Round in one week! We're excited to provide you with another season of intriguing problems (including some interactive ones) and a refreshed user experience. Register today for a chance to earn the coveted title of Code Jam Champion at the World Finals in San Francisco, California, and take home the grand prize of $15,000.

Here’s what you need to know about this year’s competition:

• The 27-hour Online Qualification Round begins on Friday, April 5 @ 23:00 UTC; registration will be open from now until the round ends.
• Registration is now a two-part process: first, you'll create a coding competitions profile, then you'll be prompted to complete registration for Code Jam specifically. Make sure you complete both steps and lookout for a registration confirmation in the "Alerts" section of our site.
• We hope you enjoy new and familiar features alike such as "ask a question," testing your solution on our servers, and receiving a participation certificate. You'll receive a certificate after the last round you participate in (so long as you make at least one competitive attempt during the Qualification Round.).
• The top 1,000 contestants in Round 2 win a limited edition Code Jam t-shirt.
• You can start warming up with previous Code Jam problems.

Visit g.co/codejam to register and review the updated Code Jam FAQs, Rules and Terms. See you on the scoreboard!

P.S. Spread the word about #CodeJam with these resources: Code Jam video, 2019 flyer and a Google Keyword blog post.

And another one:

Reminder: the 2019 Code Jam Qualification Round begins later today. We have a few exciting updates and helpful reminders to share:

• We've made several updates to our FAQ, and are proud to offer 20 additional languages this season! Please review all of the FAQ sections before the round — especially "Competing," "Coding," and "Interactive Problems", which contain important details about supported languages, updated tools and testing on our servers

• The round will be open for 27 hours, starting April 5 at 23:00 UTC and ending April 7 at 2:00 UTC. You can spend as much or as little of the 27 hours competing as you would like, but you must attain a final score of at least 30 points to move on to Code Jam’s Round 1. If you're a new competitor who is comfortable with programming, the odds are good that you will be able to earn enough points to advance within a few hours.

• You can prepare by: working through past problems, reviewing the Code Jam FAQ & Rules and Terms. If you have questions during the round, use the "Ask a Question" feature in the competition interface. If you can't find an answer in the FAQ or Rules, reach out to codejam@google.com.

Good luck!

The Code Jam Team

This year, Code Jam has a new competition interface. To register for Code Jam, you will have to first create a profile in the new system (even if you participated in the previous years), and then to register for the Code Jam itself.

Also, the list of supported languages was significantly expanded. The supported languages are: Bash, C, C++, C#, Clojure, Dart, F#, Go, Groovy, Haskell, Java, JavaScript, Julia, Kotlin, Lisp, Lua, Objective-C, OCaml, Octave, Pascal, Perl, PHP, Python 2, Python 3, PyPy 2, R, Ruby, Rust, Scala, Swift, TypeScript, and Visual Basic.

You may want to read some useful posts about Code Jam:

• Let's promote Codeforces among Google Code Jam participants
• No Distributed Code Jam in 2019
• New Code Jam interface: a step back in usability
• Code Jam Lite UserScript
• Code Jam organizers don't read Codeforces

Good luck & have fun!