Hello Codeforces!

We invite you to compete in the California Informatics Competition! The contest will take place on Saturday, November 26, 2022 from 4:00 p.m. to 7:00 p.m. Pacific Time. Registrations are now open and will be until Wednesday, November 23, 2022 at 11:59 p.m. Pacific Time, so register here while you can! The contest will take place on our custom judge platform.

The California Informatics Competition (CALICO) is a semiannual team programming contest organized by students at the University of California, Berkeley. We create original problems to encourage students to grow their problem-solving skills and learn algorithms in new and exciting ways. Check out our website to learn more about the contest and join our discord server to get announcements, make teams, hang out, and more!

The contest will be 3 hours long and you can compete solo or in a team of up to 3. There will be around 12 problems spanning a wide range of difficulty from Div 4 all the way to Div 1 and everything in between. Some problems will have multiple test sets and you must get all test cases correct to pass the set. One or two of the problems may be interactive. Anyone can compete in the contest, but only pre-college students will be eligible to win prizes. We also plan to release editorials immediately after the contest. More details will be released as the contest date approaches.

These awesome problems and editorials are written, prepared, and tested by the CALICO Team, including plourde27, yjp20, spiralsim, TheKingAleks, ss1237, fatant, bradley.louie1, KradecaNaLukcheta, vcivek, alfphaderp, voidcs, skywire2000, and many more!

We’ve had a ton of fun creating these problems! We think there will be something interesting for everyone, regardless if you’re totally new or an experienced competitor.

Good luck on the contest!