UPD1: Prizes for the online contest are announced! See the prizes section below for more details.
UPD2: TJIOI starts in one hour! Make sure to join the Codeforces group and register for the contest.
UPD3: Editorial is posted!
TJHSST's very own high school programming contest is back!
TJIOI 2025 will be held on Saturday, May 17th 2025 both in-person at the Thomas Jefferson High School for Science and Technology (TJHSST) and virtually through a Codeforces mirror open to everyone, with prizes of up to $600+.
This contest was brought to you by the TJ Computer Team: avnithv, OkClinty, xug, slacker, flight, blo66y, andrewc173, avnig, lhhuang, and Atvaster. We thank our valuable testers MunirKP, ChiMasterBing, reisen, and DanielQiu for their insight and feedback.
Details
- Open to teams of up to 3 competitors
- Problems will range from USACO Bronze level to USACO Platinum level, so coders of all experiences are encouraged to join!
- It is permitted to use any source which was published before the start of the contest. You may not use generative AI for any part of the contest.
In-Person
- 10:00 AM EDT to 4:00 PM EDT on Saturday, May 17th (contest time is from 12:30 PM EDT to 3:30 PM EDT)
- Limited to middle school and high school participants.
- To register, fill out the registration form. Registration is first come first serve, so make sure to sign up quickly!
Online mirror
- 12:30 PM EDT to 3:30 PM EDT on Saturday, May 17th
- Join the Codeforces Group TJIOI 2025.
- Anyone can participate!
Prizes
High School (in-person only)
- $50 per person
- $35 per person
- $25 per person
Middle School (in-person only)
- $30 per person
- $20 per person
- $15 per person
Online (Codeforces)
- $30 per team
- $20 per team
- $10 per team
If you have any questions please email [email protected] or visit our website. We hope to see you at TJIOI!
As an author / avnithv enthusiast, I hope everybody adores and admires this year's TJIOI problems.
What's for lunch?
Pizza
orz avnithv
we gotta pay the registration fee even if we participating online??
There is no registration fee for online teams.
i got the mail saying to confirm registration send cheque to something
The registration form is only for in-person participants.
so how do online participants participate
All you have to do is join the Codeforces group.
Auto comment: topic has been updated by avnithv (previous revision, new revision, compare).
Auto comment: topic has been updated by xug (previous revision, new revision, compare).
Contest starts in one hour!
Is there a reason why Cookie XOR wasn't in the in-person contest, and vice versa for Cookie Tower and Placing Dominoes? Thanks for the contest, really enjoyed the problems!
We generally tried to make the in-person contest easier. Cookie XOR was intended to be in the in-person contest but was removed at the last minute.