Day 1 of the on-site Individual Contest at the 2nd International Olympiad in Artificial Intelligence (Beijing, China, 2025). The day-1 tasks are extensions / continuations of the at-home round.

Tasks: Radar (Individual), Chicken Counting. Task 3 — Concepts — uses an LLM-based judge and is not hosted on LQDOJ; see the official repo.

Source: https://github.com/IOAI-official/IOAI-2025/tree/main/Individual-Contest