Hello, everyone!

The British Informatics Olympiad (BIO) is the selection process for anyone under 18 living in Great Britain (note: Northern Ireland has a separate selection process) who wants to take part in the International Olympiad in Informatics (IOI).

The selection process consists of 2 rounds:

1. Round 1 - Held at schools, see below for more information
2. Round 2 - The top 15 out of the country from Round 1 are selected to take part in a weekend selection camp in Cambridge, around April time. The top 4 will then represent Great Britain at the IOI.

This is a short guide on how to prepare for the first round of the BIO (especially if you are new to the competition). For...