Hi everyone!

We're happy to invite you back to OCPC 2027 Winter in Hong Kong, on 2–8 January at City University of Hong Kong! Join us onsite or online for a week of solving problems with your teammates, discussing solutions, and meeting other people who enjoy competitive programming.

There will be seven five-hour ICPC-style contests, one each day, followed by solution discussions. If you're heading to the Hong Kong ICPC Regional Contest on 9–10 January, the camp fits right before it. Registration for the Regional is separate.

Register your team · Camp details

Joining the camp

Onsite participation is free; participants arrange their own travel, accommodation and regular meals.

For online teams, the fee is €198 per team of up to three people, with these discounts:

• €147 early bird if you register by 2 December 2026;
• €48 hardship fee if the regular fee would be a financial burden — we trust your self-assessment;
• Free participation for people affected by the war in Ukraine and teams affiliated with Ukrainian institutions.

Register by 19 December to join onsite, or 26 December to join online. Onsite places are subject to confirmation. If you need a visa invitation letter, please register early and let us know in the form.

Online teams can start each contest within 24 hours of its onsite start and still get the full five hours. Solution discussions follow the onsite schedule, with recordings available afterwards.

We’re also running OCPC 2027 Winter in Osijek on 30 January–7 February at the School of Applied Mathematics and Informatics, University of Osijek. It ends a few days before EUC (12–14 February), a good chance for European teams to train for it.

Register for Osijek through the same form: €147 early bird until 30 December 2026. Registration closes on 16 January (onsite) and 23 January (online). Eligible Ukrainian teams participate for free.

We encourage Asia-Pacific teams to join Hong Kong and European teams to join Osijek, but pick whichever suits you. Both editions use the same seven contests, so please choose one and keep the problems private until their release is authorized.

Meet the authors

Our planned contest lineup includes:

• Kinon — IMO bronze, silver and gold medalist.
• Pyqe — IOI gold medalist and author of IOI 2024 Nile and Tree (Xylem).
• KIT — gloria_mundi and burg113, winners of GCPC 2025 and silver medalists at NWERC 2024 and 2025.
• Colin and friends — led by Yixiong, a problemsetter for ICPC Asia East contests and Universal Cup staff member.
• Pizza — AmirrzwM and MohammadParsaElahimanesh, authors of Codeforces and Rayan rounds.
• University of Latvia team — Valters07 and realcomplex.
• Trademark — marks39, ssk4988 and Thomas (Alg01). Tyler and Sachin were the 2025 North America Big South champions.
• Ballmer Peak — AmShZ, Keshi and Amoo_Safar, returning after Summer 2026 with ICPC World Finals and IOI problem-setting experience.

You can find the registration and refund terms on the website. For questions, join us on Discord.

Special thanks

Thank you to:

• Jane Street for supporting the camp;
• City University of Hong Kong, Minming Li and Yixiong for hosting us;
• the ICPC Foundation for their help and support;
• Codeforces for support and guidance;
• Eolymp for the contest judging platform;
• BigBag for maintaining the combined camp scoreboards;
• the University of Osijek for hosting earlier camps and helping with their administration and finances.

We look forward to seeing familiar faces and welcoming new teams this winter!