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Indian Computing Olympiad, 2026

Zonal Informatics Olympiad (ZIO-2026) will be held on Saturday, 15 November, 2025. Online registration is open till Thursday, 30 October, 2025.
Zonal Computing Olympiad (ZCO-2026) will be held on Sunday, 7 December, 2025. Registration will open after 27 October.
You have to register separatly for ZIO-2026 and ZCO-2026. You can write both exams and qualify through either one for INOI-2026.

Zonal Informatics Olympiad, 2026 (ZIO-2026)

The Zonal Informatics Olympiad, 2026 (ZIO-2026) will be held on Saturday, 15 November, 2025 from 2:00 pm to 5:00 pm at centres across the country. ZIO-2026 will be conducted in cooperation with TCS iON, a division of Tata Consultancy Services. Online registration is open till Thursday, 30 October, 2025.

Exam centres

Centres for ZIO-2026 will be arranged in the following cities.

Allahabad, Ahmedabad, Amritsar, Bangalore, Bhopal, Bhubaneswar, Bokaro Steel City, Chandigarh, Chennai, Cochin, Coimbatore, Dehradun, Delhi NCR, Gwalior, Guwahati, Hyderabad, Indore, Jaipur, Jammu, Jodhpur, Kanpur, Kolkata, Kota, Lucknow, Mumbai, Nagpur, Panaji, Patna, Pune, Raipur, Ranchi, Roorkee, Surat, Tiruchi, Trivandrum, Varanasi, Visakhapatnam

The address of the exam centre in each city will be announced after registrations close.

Individual registration

To register, use this link.
The registration fee is Rs 472 (Rs 400 + GST), to be paid online (credit card, debit card, net banking, UPI). Transaction fees may be added by the registration portal, depending on the mode of payment.
You will need an Admit Card from IARCS to write ZIO-2026. Admit cards will be available approximately 5 days before the exam.
If you have any queries, please write to ico@iarcs.org.in.

Bulk registration

Bulk registration is only available for registering 10 or more participants at the same time. For details, please write to ico@iarcs.org.in.

Exam details

ZIO-2026 will be administered as a computerized test, on the TCS iON platform. The question paper pattern will be the same as in previous years. You will work out the solutions using pen and paper and only submit your final answers. Instead of a printed question paper and answer sheet, you will read the question paper on the screen and type in your answers on the computer.
The syllabus for ZIO is the list of Basic Topics in the ICO Online Study Material
Previous question papers and solutions are available in the ICO Archives: ZIO-2003, ZIO-2004, ZIO-2005, ZIO-2006, ZIO-2007, ZIO-2008, ZIO-2009, ZIO-2010, ZIO-2011, ZIO-2012. ZIO-2013. ZIO-2014, ZIO-2015, ZIO-2016, ZIO-2017, ZIO-2018, ZIO-2019, ZIO-2020, ZIO-2021. ZIO-2022. ZIO-2023, ZIO-2024, ZIO-2025.
You can also find past ZIO question papers with solutions and explanations at CodeChef's ZIO site.

Indian Computing Olympiad, 2025

International Olympiad in Informatics, 2025 (IOI-2025)

The International Olympiad in Informatics, 2025 (IOI-2025) was hosted by Bolivia during the period 27 July–3 August, 2025. The following team represented India at IOI-2025.

Samik Goyal, DAV Public School, Patiala
Naveen Kulkarni, Heera Lal Public School, Delhi
Archit Manas, Delhi Public School, Faridabad
Yash Thakker, Garodia International Centre of Learning, Mumbai

Samik Goyal, Naveen Kulkarni, Yash Thakker, Archit Manas

The Indian team to IOI-2025 won three medals. Samik Goyal won a silver medal. Naveen Kulkarni and Archit Manas won bronze medals. Yash Thakker was awarded an Honourable Mention.

The Leader and Deputy Leader of the Indian contingent were Madhavan Mukund and Arjun Arul, respectively.

The Indian team's travel to IOI was sponsored by Sasken.

European Girls Olympiad in Informatics, 2025

The European Girls Olympiad in Informatics 2025 was organized in Germany during the period 14–20 July, 2025. The following team represented India at EGOI-2025.

Saanvi Gunda, Chirec International School, Hyderabad
Swasti Patil, Unschooled, Pune
Mansi Sane, JBCN International School, Parel, Mumbai
Neha Sane, JBCN International School, Parel, Mumbai

Neha Sane, Swasti Patil, Mansi Sane, Saanvi Gunda

Neha Sane, Mansi Sane and Swasti Patil won bronze medals, and Saanvi Gunda was awarded Honourable Mention.

The Leader of the Indian contingent was Sonia Garcha, from CSpathshala.

The Indian team's travel to EGOI-2025 was sponsored by Sasken.

Asia-Pacific Informatics Olympiad, 2025

The Asia-Pacific Informatics Olympiad 2025 (APIO-2025) was organized online by Uzbekistan during the period 17–18 May, 2025. All students who received gold or silver medals in INOI-2025 were invited to represent India at APIO-2025. The top six contestants from each country are eligible to receive medals at APIO.

India won two medals at APIO-2025. Yash Thakker won a silver medal. Adhitya Mangudy Venkata Ganesh won a bronze medal. The other four official participants for India at APIO-2025 were Naveen Kulkarni, Archit Manas, Mann Shah and Aviansh Verma.

International Olympiad in Informatics Training Camp, 2025 (IOITC-2025)

The Indian team for IOI is selected at the International Olympiad in Informatics Training Camp (IOITC). IOITC-2025 was held in Chennai during the period 8–14 June, 2025.

IOI Training Camp 2025

Faculty for IOITC-2025:

Arjun Arul (Coordinator)

Adam Gasienica-Samek, Warszawa XIV LO Staszica
Paras Kasmalkar, University of Wisconsin-Madison
Ashwin Krishnamoorthy, Newton School
Pranav Rajagopalan, Google
Yaduraj Rao, CMI
Harsh Sharma, CMI
Kshitij Sodani, MIT
Nishank Suresh
Sushil Raaja U, IIIT Hyderabad
Shreyan Ray, IIT Kharagpur
Jatin Yadav, IIT Delhi

We thank Sasken for sponsoring the camp and Chennai Mathematical Institute for hosting the camp.

Question papers and other material from …