and simpler questions that can be answered through a variety of techniques like brute force testing, logical reasoning, simulation, and combinatorics knowledge. The competition can be done in any programming language in any environment, sat in the participant's own school.

The round 2 consists of 4 much harder questions, to be answered during a 5-hour exam in Cambridge, to which students may bring their own device, programming in C/C++ only. You are allowed 5 submissions to an online grader which will provide limited feedback on your