- Download the USA-J-AIO sample problems and answer key (PDF).
- Find the sample problems on contest.usaaio.org.
Registration for the 2027 edition is now open. It will close on January 31, 2027, at 11:59 p.m. ET.
Registration for the 2027 edition is now open. It will close on April 30, 2027, at 11:59 p.m. ET.