SeriousOJ

09/05/2026

👏 Thanks to everyone for participating and making this round successful.

💻 Keep practicing.
⚡ Keep improving.
🚀 See you in the next SeriousOJ contest!

08/05/2026

🚨 Reminder!
✨ Educational Round 2 ✨ begins in approximately 3.5 hours — don’t miss it!
Join us today at 20:30 BST on the SeriousOJ Platform for an exciting coding showdown.
💻 Not registered yet? There’s still time! Sign up now and be part of the action.
📩 Registration link is available in the comment section below.
Kickstart your year with a coding adventure and showcase your programming skills! 💪

07/05/2026

Hello CP Enthusiasts!
We’re thrilled to announce an exciting new contest — 𝗦𝗲𝗿𝗶𝗼𝘂𝘀𝗢𝗝 𝗘𝗱𝘂𝗰𝗮𝘁𝗶𝗼𝗻𝗮𝗹 𝗥𝗼𝘂𝗻𝗱 𝟮 — hosted on the 𝐒𝐞𝐫𝐢𝐨𝐮𝐬𝐎𝐉 platform!

📅 Date: Friday, 8 May 2026
⏰ Time: 8:30 PM (BST)
📝 Problems: 6-8
✍ Problem Writer: Kamonasish Roy, MD Shahinur Rahman
🔍 Problem Testers: Thakur Emon, Abu Sufian Rafi, Abid Hussen
🏆 Platform: 𝐒𝐞𝐫𝐢𝐨𝐮𝐬𝐎𝐉
• Rated : Level 0 — Level 10
• Difficulty: Similar to Codeforces Div 3- Div 2

With special appreciation to 𝐀𝐫𝐚𝐟 𝐀𝐥-𝐉𝐚𝐦𝐢, the owner of SeriousOJ, for his incredible support and for providing us with this amazing platform to compete and grow.

📝 How to Register: Visit 𝐒𝐞𝐫𝐢𝐨𝐮𝐬𝐎𝐉 and sign up for the contest. Having trouble registering? Check your spam folder for the confirmation email.
Let’s learn, compete, and conquer in 𝗦𝗲𝗿𝗶𝗼𝘂𝘀𝗢𝗝 𝗘𝗱𝘂𝗰𝗮𝘁𝗶𝗼𝗻𝗮𝗹 𝗥𝗼𝘂𝗻𝗱 𝟮 ! Stay tuned for updates — and check the comments for the registration link. See you all at the contest!

18/04/2026

🎉 Congratulations to the Champions! 🎉
A big thank you to all participants for making this contest exciting and competitive! ❤️

📢 Stay connected for more contests and opportunities!

16/04/2026

Hello CP Enthusiasts!
We’re thrilled to announce an exciting new contest — 𝐂𝐨𝐝𝐞𝐂𝐨𝐦𝐛𝐚𝐭 𝐑𝐞𝐩𝐥𝐚𝐲 𝐑𝐨𝐮𝐧𝐝 𝟐𝟎𝟐𝟔 — hosted on the 𝐒𝐞𝐫𝐢𝐨𝐮𝐬𝐎𝐉 platform!

📅 Date: Friday, 17 April 2026
⏰ Time: 8:30 PM (BST)
📝 Problems: 10 (one problem divided into two subtasks)
✍ Problem Writer: Kamonasish Roy, Nasif Imtiaj, Abu Sufian Rafi
🔍 Problem Testers: Aminul Haque Tanim, Toufik Islam, Md Jahirul Islam Hridoy, Muhammad Nadim, MD Shahinur Rahman
🏆 Platform: 𝐒𝐞𝐫𝐢𝐨𝐮𝐬𝐎𝐉
• Rated : Level 0 — Level 10
• Difficulty: Similar to Codeforces Div 3

With special appreciation to 𝐀𝐫𝐚𝐟 𝐀𝐥-𝐉𝐚𝐦𝐢, the owner of SeriousOJ, for his incredible support and for providing us with this amazing platform to compete and grow.

This round was originally conducted as an onsite contest, and now we are bringing it to a wider global audience. If you have 𝐀𝐥𝐫𝐞𝐚𝐝𝐲 𝐩𝐚𝐫𝐭𝐢𝐜𝐢𝐩𝐚𝐭𝐞𝐝 𝐢𝐧 𝐭𝐡𝐞 𝐨𝐧𝐬𝐢𝐭𝐞 𝐫𝐨𝐮𝐧𝐝, we strongly recommend that you refrain from participating in this contest.

📝 How to Register: Visit 𝐒𝐞𝐫𝐢𝐨𝐮𝐬𝐎𝐉 and sign up for the contest. Having trouble registering? Check your spam folder for the confirmation email.
Let’s learn, compete, and conquer in 𝐂𝐨𝐝𝐞𝐂𝐨𝐦𝐛𝐚𝐭 𝐑𝐞𝐩𝐥𝐚𝐲 𝐑𝐨𝐮𝐧𝐝 𝟐𝟎𝟐𝟔 ! Stay tuned for updates — and check the comments for the registration link. See you all at the contest!

12/04/2026

🔥 Ready to code?

SeriousOJ is proud to host the CodeCombat Mock Test organized by IEEE Computer Society LU SB Chapter.

💻 Open for all | ⏱️ 1.5 hours
Challenge yourself and experience real contest vibes!

📅 April 12 | 🕣 8:30 PM

We are excited to organizing the CodeCombat Mock Test under HackFusion 2026, organized by IEEE Computer Society LU SB Chapter.

💻 This is an open-for-all mock contest, designed to help you practice, compete, and boost your problem-solving skills in a real contest environment.

⚡ We sincerely appreciate for providing a smooth, reliable, and competitive platform to make this contest possible.

🕒 Duration: 1.5 Hours
📅 Date: April 12, 2026
🕣 Time: 8:30 PM
🌐 Platform: SeriousOJ
Mock Contest Link: https://serious-oj.com/contest/69d7591c48074c00078872bb

🔥 Don’t miss this opportunity to test your coding skills and prepare yourself for the main contest!

11/04/2026

𝐑𝐞𝐚𝐝𝐲 𝐭𝐨 𝐭𝐞𝐬𝐭 𝐲𝐨𝐮𝐫 𝐥𝐨𝐠𝐢𝐜, 𝐬𝐩𝐞𝐞𝐝, 𝐚𝐧𝐝 𝐜𝐨𝐝𝐢𝐧𝐠 𝐞𝐱𝐜𝐞𝐥𝐥𝐞𝐧𝐜𝐞?
𝐒𝐞𝐫𝐢𝐨𝐮𝐬𝐎𝐉 is proud to power the programming contest 𝐂𝐎𝐃𝐄 𝐂𝐎𝐌𝐁𝐀𝐓, organized under Hackfusion 2026. We are honored to have our talented team members contributing as judges and problem setters, ensuring a competitive and high-quality contest experience.

Compete, learn, and challenge yourself on the 𝐒𝐞𝐫𝐢𝐨𝐮𝐬𝐎𝐉 platform alongside some of the brightest minds.

🔥 Let the best coder rise to the top!

08/01/2026

Congratulations to the Top 10 Global Rankers of SeriousOJ, 𝗛𝗮𝗽𝗽𝘆 𝗡𝗲𝘄 𝗬𝗲𝗮𝗿 𝟮𝟬𝟮𝟲 𝗥𝗼𝘂𝗻𝗱 ✨
The SeriousOJ arena once again witnessed incredible problem-solving skills and determination as coders from around the world showcased their talent in Happy New Year 2026 Round.
🔥 𝐓𝐨𝐩 𝐏𝐞𝐫𝐟𝐨𝐫𝐦𝐞𝐫𝐬 𝐨𝐟 𝐭𝐡𝐞 𝐑𝐨𝐮𝐧𝐝:
🥇 Champion: physics0523 🇯🇵 (KU) — 7 problems solved, CF Max: 2795
🥈 1st Runner-Up: zanj0 🇺🇸 (Amazon)— 7 problems solved, CF Max: 1841
🥉 2nd Runner-Up: hieptk 🇻🇳(Hawoi) — 7 problems solved, CF Max: 2127
💡 Notable mentions to all the outstanding coders who made it to the Top 10, representing institutions and countries with pride — from Germany, Japan, USA, Bangladesh, India, and Thailand.
👏 Kudos to all participants for their consistent effort and competitive spirit.
Special thanks to the problem author Kamonasish Roy, Thakur Emon and to 𝐀𝐫𝐚𝐟-𝐀𝐥 𝐉𝐚𝐦𝐢, the owner and driving force behind SeriousOJ, for providing such a vibrant platform for learning and competition.
Stay tuned and keep practicing — more rounds are coming soon!
Let’s keep raising the bar of competitive programming! 💪

06/01/2026

🚨 Reminder!
"Happy New Year 2026 Round" begins in approximately 4.5 hours — don’t miss it!
Join us today at 20:30 BST on the SeriousOJ Platform for an exciting coding showdown.
💻 Not registered yet? There’s still time! Sign up now and be part of the action.
📩 Registration link is available in the comment section below.
Kickstart your year with a coding adventure and showcase your programming skills! 💪

04/01/2026

Hello CP Enthusiasts!
We’re thrilled to announce an exciting new contest — 𝗛𝗮𝗽𝗽𝘆 𝗡𝗲𝘄 𝗬𝗲𝗮𝗿 𝟮𝟬𝟮𝟲 𝗥𝗼𝘂𝗻𝗱 — hosted on the 𝐒𝐞𝐫𝐢𝐨𝐮𝐬𝐎𝐉 platform!
This round is designed to help you learn and grow while tackling thoughtfully crafted problems. Whether you’re honing your skills or stepping up your game, this is a great chance to test yourself and have fun.
📅 Date: Tuesday, 6th January 2026
⏰ Time: 8:30 PM (BST)
📝 Problems: 7-8 problems
✍ Problem Writer: Kamonasish Roy, Thakur Emon
🔍 Problem Testers: Abu Sufian Rafi, Abid Hussen
🏆 Platform: 𝐒𝐞𝐫𝐢𝐨𝐮𝐬𝐎𝐉
With special appreciation to 𝐀𝐫𝐚𝐟 𝐀𝐥-𝐉𝐚𝐦𝐢, the owner of SeriousOJ, for his incredible support and for providing us with this amazing platform to compete and grow.
📝 How to Register: Visit 𝐒𝐞𝐫𝐢𝐨𝐮𝐬𝐎𝐉 and sign up for the contest. Having trouble registering? Check your spam folder for the confirmation email.
Let’s learn, compete, and conquer in 𝗛𝗮𝗽𝗽𝘆 𝗡𝗲𝘄 𝗬𝗲𝗮𝗿 𝟮𝟬𝟮𝟲 𝗥𝗼𝘂𝗻𝗱 ! Stay tuned for updates — and check the comments for the registration link. See you all at the contest!