We're thrilled to invite you to participate in our upcoming Happy New Year 2026 programming contest at SeriousOJ.
Problem setter : thakuremon, Bullet, _ASRafi__, Abid_52
Problems: 7
Duration: 2:30 hours
Difficulty: Similar to Codeforces Div 3
Rated : Level 0 — Level 10
Special thanks to CLown1331, owner of SeriousOJ.
Update 1: Time extended by 15 minutes.
Update 2: Congrats to the winners!
Update 3 : Editorial
Registration: Please register for the contest on SeriousOJ. If you encounter any issues on the register, be sure to check your spam folder for the confirmation email.
Good luck & Have fun!!!
After a long time, we finally have a SeriousOJ round.
New year new contest. Happy coding :D
Contest after a long time. Perfect way to start the year. Thanks SeriousOJ and our Senior brothers.
Really excited to participate in this contest!
Was eagerly waiting for this. Thanks to SeriousOJ and our senior brothers for arranging the round.
Grateful to our seniors and SeriousOJ for organizing this. Excited to participate.
GL to all!!!
Best of luck to all.
Reminder : only 15 minutes left to start the contest.
Auto comment: topic has been updated by Bullet (previous revision, new revision, compare).
Auto comment: topic has been updated by Bullet (previous revision, new revision, compare).
Auto comment: topic has been updated by Bullet (previous revision, new revision, compare).
How to do Problem E ;-;
We will publish the full editorial for all problems on our website tomorrow, and the website link will be added to this blog post.
For Problem E, the task reduces to a classic 0-1 Knapsack (subset sum) problem. A standard DP solution may result in TLE due to constraints, so an optimised bitset-based DP should be used to pass within time limits.
enjoyed the problems!
Glad to hear that you enjoyed the round. Thank you for participating in this contest. Stay connected with us for our upcoming educational rounds, we will provide even more interesting problems.
Good problem set. Thank you. :)
Auto comment: topic has been updated by Bullet (previous revision, new revision, compare).