Hello Everyone!

Coding Club NIT Silchar is back with Code Cauldron — Brew Your Code, the flagship event of our coding week, Townhall. So join forces and get ready to whip up some creative solutions while savoring some exciting challenges.

The coding competition is open to all undergraduate and dual degree programmers in India, although everyone is encouraged to participate in it. The contest will be based on ICPC guidelines. The top 3 teams will be eligible for prizes from a prize pool of 15K INR. There will be 10-12 problems, and you will be given 4 hours to solve them.

Rules:

• A team of 2-3 members from the same college must participate in the contest.
• An eligible individual may join only one team.
• A team must be created in Codeforces composed of the members.
• You should register for the contest using the formed team.
• The team must also register using the link provided below. Not adhering to this requirement will make the team ineligible for winning prizes.
• Cheating by any means including the use of AI is strictly prohibited and will lead to immediate disqualification.

Contest Time: The round will be held on Mar/30/2025 18:15 (Moscow time) and will last 4 hours(online).

Registration Link

Contest Link

The problems are written and prepared by Determinist, karock, SleeepyHead, pranavachaitanyaballa, itsiftikar02, 7rikster, Denominator18.

Special thanks to maspy for valuable feedback and testing.

We would also like to thank :

• Peter-007, EyadBT, LikithReddy123 for proper testing of the problems.
• MikeMirzayanov for the amazing Codeforces and Polygon platforms.
• And You for participating!

Update: The contest link has been changed due to technical issue. The previous link has been replaced by the new one!

Update: Editorial

I have been creating questions for about 6 months it was quite easy before o3 mini and deepseek r1 to create questions that were ai unsolvable but now it's very difficult, I had created a question which I had belived was very unique and was unsolvable for ai of that time then deepseek came even it was unable to solve but then o3 mini came it solved it with ease.

MAIN PART:- So my question is how to create questions which are AI unsolvable at least the current versions of AI can't solve them like o3 mini or deepseek r1 etc, what is the way to do it? I have been trying to do it for quite sometime but have repeatedly failed so if you guys have any idea please let me know. It will help me and many folks like me.

Thank you!

It took me about a year to become an Expert, which may be a small feat, but I still believe that maybe sharing the resources which I personally had used might help someone.

1. For learning algorithms: You can use a channel called takeuforward by a guy named striver: https://www.youtube.com/@takeUforward. The guy has excellent explaining skills. I would ideally recommend building a habit of reading blogs and articles, as later on, you will only have those to help you.

2. For practice:

• CSES Problem set: It's a very great website to practice good quality questions. The questions are sometimes standard and sometimes very unique so you ultimately end up learning a lot but the time constrains can be a bit irritating tbh. https://cses.fi/problemset/list/

• TLE eliminators cp-31: Best one I found for rating wise practice although you will need more than 31 questions generally to get comfortable with higher rating but it does provide us with all the necessary concepts and algorithms related to that rating. https://www.tle-eliminators.com/cp-sheet

• Codeforces Problemset: Just put in the rating you want to get comfortable in and keep on making it green until you can comfortably solve at least 8/10 problems without any help. (probably the one which will work for everyone)

1. Always upsolve the contests and if you are unable to find you're weakness then maybe try looking at the contests where you got a negative or very low rating change and see work on the topic of the questions which you were unable to solve or solved too late.

2. Give as many contests as you can provided you have time to upsolve them later. Some other sites where I give contests are: -Atcoder -Codechef -Leetcode

3. Most importantly enjoy the process always remember rating is a by-product not the main goal.