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

Tasks: Antique Painting Authentication, Restroom Icon Matching. Task 6 — Pixel Efficiency Challenge — uses CLIP at grading time and is not hosted on LQDOJ; see the official repo.

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