Overview
The Indian Computing Olympiad (ICO), organized by IARCS, is India's national school-student programming and informatics competition. The Zonal Computing Olympiad (ZCO) and Indian National Olympiad in Informatics (INOI) are stages in the pathway used to select India's team for the International Olympiad in Informatics.
2026–27 cycle
IARCS lists the ZCO exam for 12 December 2026, with registration closing 1 December 2026 at 21:00 IST. The ZCO fee is ₹472 including GST, plus any payment transaction charges. ZCO accepts Python, C, C++, and Java. IARCS lists INOI on 6 February 2027 for qualifying participants, and says C++ is the language used at INOI. Check IARCS's current page for examination centres, rules and updates.
IARCS states that students studying in school through Class 12 during academic year 2026–27 may participate and says students of any school board are welcome. Its page also requires that participants still be at school; students using an open-school route should confirm that their enrollment qualifies before registering.
Format and selection
ZCO is an individual in-person programming examination. Qualifiers can advance to INOI; top results may lead to the national training-camp and IOI selection process. Entry or participation is not itself a national honor, and selection is competitive. The current competition pages do not publish an acceptance rate.
Sources
Cycle-specific dates and fees change; confirm them with IARCS before applying.
