Hello Everyone,↵
↵
The **Computer Coding Club** of MNNIT is thrilled to invite all students to participate in **OPC GoodBye 2025**, scheduled to take place on [Tuesday, December 30, 2025 at 9:00 PM IST](https://www.timeanddate.com/worldclock/fixedtime.html?day=30&month=12&year=2025&hour=18&min=30&sec=0&p1=166).↵
↵
#### Links↵
↵
- Join [CC club](https://mirror.codeforces.com/group/hUywLYmr80/) to be able to participate in the contest.↵
- Registration form (MNNIT Students): [here](https://docs.google.com/forms/d/e/1FAIpQLSdRvcPSc9lJ2k6JiDqKAL0CgE4WnyDw7BW_qf-JuLfqEJ_73A/viewform?usp=publish-editor)↵
- Contest Link: [here](https://mirror.codeforces.com/group/hUywLYmr80/contests)↵
↵
↵
↵
This event offers an exciting opportunity to immerse yourself in the realm of competitive programming, showcasing your skills while enjoying the thrill of a spirited competition. ↵
↵
A big thanks to all setters and testers: me (Prakhar Garg) [user:mnnit.prakharg,2025-12-22], Surya Pratap Singh [user:late_night_dreams,2025-12-22], Shubhranshu Mishra [user:NPsolved.cpp,2025-12-22], Abhay Sachan [user:abhaysachan360,2025-12-22], Himanshu Kumar [user:newbie_8,2025-12-22] and Ayush Tiwari [user:Ayush5071,2025-12-27].↵
↵
---------------------------------------↵
↵
### **Contest Rules**↵
**Individual Participation** – The contest is strictly for individual participants. Any form of collaboration or discussion during the contest is prohibited.↵
↵
**Strict Prohibition of AI Tools** – The use of any AI-based tools, including code generation or problem-solving assistants, is strictly forbidden. Any participant found violating this rule will be disqualified and removed from the rankings.↵
↵
**Plagiarism and Malpractice** – Any form of code plagiarism, sharing of solutions, or unauthorized assistance will lead to immediate disqualification. The organizing team reserves the right to take necessary actions in such cases.↵
↵
---------------------------------------↵
↵
**Contest Registration:** Registration for the contest will open 6 hours before it begins. To participate, ensure you are a member of this group and have completed your registration.↵
↵
**Scoring and Ranking:** The contest will adopt a binary scoring system. The rank of contestants will be determined by the total number of problems successfully solved by the participant, and the total time taken to solve the problems. A penalty of 20 minutes will be added for each incorrect submission on a problem before it is solved. Problems are organized in increasing order of difficulty to provide a progressively challenging experience for participants.↵
↵
The problem set will consist of **7 problems**, and participants will have a total of **2 hours and 30 minutes** to complete them.↵
↵
The problem set will consist of a mix of difficulty levels, designed to test your skills in algorithms, data structures, and problem-solving. Make sure to manage your time wisely and aim to solve as many problems as possible within the given time frame. Good luck, and happy coding!↵
↵
-------------------------------------------↵
↵
We’re excited for you to try the problem set and wish you the best of luck. See you on the leaderboard!↵
↵
Best regards,↵
↵
Computer Coding Club, MNNIT↵
↵
UPD1: **Registration has started.**↵
↵
UPD2: [Editorial](https://mirror.codeforces.com/group/hUywLYmr80/blog/entry/17243) is out.↵
↵
UPD3: ↵
↵
### **Congratulations to winners**↵
↵
<spoiler summary="Winners">↵
1. [user:Kira_1234,2025-12-30]↵
2. [user:SiddharthJoshi,2025-12-30]↵
3. [user:grecil,2025-12-30]↵
</spoiler>↵
↵
<spoiler summary="Top performers from MNNIT">↵
1. [user:Eikyu,2025-12-30]↵
2. [user:Butan07,2025-12-30]↵
23. [user:tanishasingh7,2025-12-30]↵
34. [user:avi20,2025-12-30]↵
</spoiler>↵
↵
<spoiler summary="Fastest Problem Solvers">↵
- Problem A: [user:Kira_1234,2025-12-30]↵
- Problem B: [user:Kira_1234,2025-12-30]↵
- Problem C: [user:Kira_1234,2025-12-30]↵
- Problem D: [user:Kira_1234,2025-12-30]↵
- Problem E: [user:Kira_1234,2025-12-30]↵
- Problem F: [user:Kira_1234,2025-12-30]↵
- Problem G: [user:serialcomder,2025-12-30]↵
</spoiler>↵
↵
↵
↵
↵
The **Computer Coding Club** of MNNIT is thrilled to invite all students to participate in **OPC GoodBye 2025**, scheduled to take place on [Tuesday, December 30, 2025 at 9:00 PM IST](https://www.timeanddate.com/worldclock/fixedtime.html?day=30&month=12&year=2025&hour=18&min=30&sec=0&p1=166).↵
↵
#### Links↵
↵
- Join [CC club](https://mirror.codeforces.com/group/hUywLYmr80/) to be able to participate in the contest.↵
- Registration form (MNNIT Students): [here](https://docs.google.com/forms/d/e/1FAIpQLSdRvcPSc9lJ2k6JiDqKAL0CgE4WnyDw7BW_qf-JuLfqEJ_73A/viewform?usp=publish-editor)↵
- Contest Link: [here](https://mirror.codeforces.com/group/hUywLYmr80/contests)↵
↵
↵
↵
This event offers an exciting opportunity to immerse yourself in the realm of competitive programming, showcasing your skills while enjoying the thrill of a spirited competition. ↵
↵
A big thanks to all setters and testers: me (Prakhar Garg) [user:mnnit.prakharg,2025-12-22], Surya Pratap Singh [user:late_night_dreams,2025-12-22], Shubhranshu Mishra [user:NPsolved.cpp,2025-12-22], Abhay Sachan [user:abhaysachan360,2025-12-22], Himanshu Kumar [user:newbie_8,2025-12-22] and Ayush Tiwari [user:Ayush5071,2025-12-27].↵
↵
---------------------------------------↵
↵
### **Contest Rules**↵
**Individual Participation** – The contest is strictly for individual participants. Any form of collaboration or discussion during the contest is prohibited.↵
↵
**Strict Prohibition of AI Tools** – The use of any AI-based tools, including code generation or problem-solving assistants, is strictly forbidden. Any participant found violating this rule will be disqualified and removed from the rankings.↵
↵
**Plagiarism and Malpractice** – Any form of code plagiarism, sharing of solutions, or unauthorized assistance will lead to immediate disqualification. The organizing team reserves the right to take necessary actions in such cases.↵
↵
---------------------------------------↵
↵
**Contest Registration:** Registration for the contest will open 6 hours before it begins. To participate, ensure you are a member of this group and have completed your registration.↵
↵
**Scoring and Ranking:** The contest will adopt a binary scoring system. The rank of contestants will be determined by the total number of problems successfully solved by the participant, and the total time taken to solve the problems. A penalty of 20 minutes will be added for each incorrect submission on a problem before it is solved. Problems are organized in increasing order of difficulty to provide a progressively challenging experience for participants.↵
↵
The problem set will consist of **7 problems**, and participants will have a total of **2 hours and 30 minutes** to complete them.↵
↵
The problem set will consist of a mix of difficulty levels, designed to test your skills in algorithms, data structures, and problem-solving. Make sure to manage your time wisely and aim to solve as many problems as possible within the given time frame. Good luck, and happy coding!↵
↵
-------------------------------------------↵
↵
We’re excited for you to try the problem set and wish you the best of luck. See you on the leaderboard!↵
↵
Best regards,↵
↵
Computer Coding Club, MNNIT↵
↵
UPD1: **Registration has started.**↵
↵
UPD2: [Editorial](https://mirror.codeforces.com/group/hUywLYmr80/blog/entry/17243) is out.↵
↵
UPD3: ↵
↵
### **Congratulations to winners**↵
↵
<spoiler summary="Winners">↵
1. [user:Kira_1234,2025-12-30]↵
2. [user:SiddharthJoshi,2025-12-30]↵
3. [user:grecil,2025-12-30]↵
</spoiler>↵
↵
<spoiler summary="Top performers from MNNIT">↵
1. [user:Eikyu,2025-12-30]↵
2. [user:Butan07,2025-12-30]↵
</spoiler>↵
↵
<spoiler summary="Fastest Problem Solvers">↵
- Problem A: [user:Kira_1234,2025-12-30]↵
- Problem B: [user:Kira_1234,2025-12-30]↵
- Problem C: [user:Kira_1234,2025-12-30]↵
- Problem D: [user:Kira_1234,2025-12-30]↵
- Problem E: [user:Kira_1234,2025-12-30]↵
- Problem F: [user:Kira_1234,2025-12-30]↵
- Problem G: [user:serialcomder,2025-12-30]↵
</spoiler>↵
↵
↵
↵
