Hello Codeforces!
We are excited to invite you to compete in CALICO Fall '26! The contest starts Sunday, November 8, 2026 at 4:00 p.m. PT and will be 3 hours long. Registrations are now open and will be until November 1st, 2026 at 11:59 p.m. PT, so register here while you can! The contest will take place on our custom judge platform and contestants can choose to compete either online or in-person at UC Berkeley!
In-Person Contest
The CALICO team is proud to announce the return of our in-person contest! Come compete LIVE at the UC Berkeley campus, learn from guest speakers, and meet the team behind CALICO! Use this link to register for the in-person competition, and keep in mind that you need to fill out BOTH the general registration form and the in-person registration form to come in person! As a reminder, the in-person event will take place on November 8th from 2-8PM (PT). While the general registration form closes on November 1st at 11:59PM PT, the in-person registration form will close on October 25th at 11:59PM PT to allow for in-person preparations.
About
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 fun 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!
Contest Info
The contest will be 3 hours long and you can compete solo or in a team of up to 3. There will be around 8-12 problems spanning a wide range of difficulty for all skill levels. Some problems will have bonus test sets, where more efficient or advanced solutions can earn additional points. At least one of the problems will be interactive. Anyone can compete, but only pre-college teams will be eligible to win prizes. Editorials for some problems may be available after the contest. More details will be released as the contest date approaches.
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!
woah so cool!!
mmmmmm... so delicious
Looking forward to it!
Boy oh boy where do I even begin. Big Ben... honey, my pookie bear. I have loved you ever since I first laid eyes on you. The way you drive into the paint and strike fear into your enemy's eyes. Your silky smooth touch, and that gorgeous brown fur. I would do anything for you. I wish it were possible to freeze time so I would never have to see you move on... You had a rough childhood, but you never gave up hope. You are even amazing outside of the contest, you're a great husband and father, sometimes I even call you dad. I forever dread and weep, thinking of the day you will one day retire. I would sacrifice my own life it were the only thing that could put a smile on your beautiful face. You have given me so much joy, and heartbreak over the years. I remember when you first left Berkeley and its like my heart got broken into a million pieces. But a tear still fell from my right eye when I watched you win your first contest in Brooklyn, because deep down, my glorious king deserved it. I just wanted you to return home. Then alas, you did, my sweet baby boy came home and I rejoiced. 2024 was a hard year for us baby, but in 2025 you made history happen. You came back and I couldn't believe it. I was crying, bawling even, and I heard my glorious king exclaim these words, "CALICO, THIS IS FOR YOU!" Not only have you changed the game of competitive programming and the world forever, but you've eternally changed my world. And now you're getting older, but still the goat, my goat. I love you pookie bear, my glorious king, Big Ben.
wow such a cool contest!!!!!!
W raffle prize
Ikr $1000 prize pool is pretty goated
are people who give contest online, eligible for prizes?
calico orz