The Asia-Pacific Informatics Olympiad (APIO) is an IOI-like online competition for delegations within the South Asian / Western Pacific region. APIO 2019 is organized by the Innopolis University. There are 2 contests: - official (students are eligible for this contest if and only if they are eligible for the IOI 2019). Each delegation registers its own competitors for the APIO. If you are a student wishing to compete, please contact your local informatics olympiad organization.- unofficial (open, anybody who wants to join can take part in it).If you want try yourself and take part in unofficial competition APIO 2019, you can register for Open Contest here. Please note your correct email, and you will get the next instructions.