(I'm too lazy to write a post so I copied [last year's](https://mirror.codeforces.com/blog/entry/141663), thanks to my senior [user:HuaJun,2026-04-12], [user:feeder1,2025-04-09] and [user:pooty,2025-04-09])↵
↵
Hello, Codeforces community!↵
↵
We are happy to invite you to participate in [National University of Singapore (NUS) CS3233 Final Team Contest 2026 Mirror](https://mirror.codeforces.com/contestInvitation/e35a8a1124ec65f5100623dadce7d073e70626ea) on [contest_time:106480]. CS3233 is a course offered by NUS to prepare students in competitive problem solving.↵
↵
**The contest is unofficial and will be held in Codeforces Gym.** Standard ICPC rules **(Unrated, ICPC Rules, Teams Preferred)** apply. **The contest is <span style="color:red">unrated</span>. Note the unusual starting time.**↵
↵
The problems are written and prepared by [user:kai824,2025-09-20], [user:feeder1,2026-04-12], [user:hoangnguyen09022004,2026-04-12], [user:hihihaha,2026-04-12], [user:ruanxiaoyu,2026-04-12], [user:evolto,2026-04-12], [user:BJoozz,2026-04-12].↵
↵
We would also like to thank:↵
↵
- Prof. Steven Halim for coordinating and teaching the [CS3233 course](https://www.comp.nus.edu.sg/~stevenha/cs3233.html);↵
- [user:hoangnguyen09022004,2026-04-12] as my fellow teaching assistant;↵
- [user:errorgorn,2025-04-09] for existing;↵
- the Kattis team for the platform used in the CS3233 course and in the official contest; and finally↵
- [user:MikeMirzayanov,2024-04-14] for the amazing Codeforces and Polygon platform!↵
↵
The contest will last for **5 hours** and consist of **13 problems**. While it is preferred to participate in a team, individual participation is also allowed.↵
↵
The problems themselves may be quite standard as they are targeted toward those who have just learned competitive problem solving. However, we have also included a few challenging problems for stronger teams, such as ex-IOI or ICPC participants taking part in the course as well. So, the participants can expect a good mix of problems of varying difficulty levels, that we hope can be educational!↵
↵
We hope you will enjoy and have fun in the contest. Good luck!↵
↵
**UPD:** Thank you for your participation, sorry for the issues with the long queue. Editorial has been uploaded [here](https://mirror.codeforces.com/gym/685508/attachments/download/37070/CS3233_2026_Final_Solution_Writeup.pdf)
↵
Hello, Codeforces community!↵
↵
We are happy to invite you to participate in [National University of Singapore (NUS) CS3233 Final Team Contest 2026 Mirror](https://mirror.codeforces.com/contestInvitation/e35a8a1124ec65f5100623dadce7d073e70626ea) on [contest_time:106480]. CS3233 is a course offered by NUS to prepare students in competitive problem solving.↵
↵
**The contest is unofficial and will be held in Codeforces Gym.** Standard ICPC rules **(Unrated, ICPC Rules, Teams Preferred)** apply. **The contest is <span style="color:red">unrated</span>. Note the unusual starting time.**↵
↵
The problems are written and prepared by [user:kai824,2025-09-20], [user:feeder1,2026-04-12], [user:hoangnguyen09022004,2026-04-12], [user:hihihaha,2026-04-12], [user:ruanxiaoyu,2026-04-12], [user:evolto,2026-04-12], [user:BJoozz,2026-04-12].↵
↵
We would also like to thank:↵
↵
- Prof. Steven Halim for coordinating and teaching the [CS3233 course](https://www.comp.nus.edu.sg/~stevenha/cs3233.html);↵
- [user:hoangnguyen09022004,2026-04-12] as my fellow teaching assistant;↵
- [user:errorgorn,2025-04-09] for existing;↵
- the Kattis team for the platform used in the CS3233 course and in the official contest; and finally↵
- [user:MikeMirzayanov,2024-04-14] for the amazing Codeforces and Polygon platform!↵
↵
The contest will last for **5 hours** and consist of **13 problems**. While it is preferred to participate in a team, individual participation is also allowed.↵
↵
The problems themselves may be quite standard as they are targeted toward those who have just learned competitive problem solving. However, we have also included a few challenging problems for stronger teams, such as ex-IOI or ICPC participants taking part in the course as well. So, the participants can expect a good mix of problems of varying difficulty levels, that we hope can be educational!↵
↵
We hope you will enjoy and have fun in the contest. Good luck!↵
↵
**UPD:** Thank you for your participation, sorry for the issues with the long queue. Editorial has been uploaded [here](https://mirror.codeforces.com/gym/685508/attachments/download/37070/CS3233_2026_Final_Solution_Writeup.pdf)
