CCC Contest System

This CCC Online Grader is the system used to run the Canadian Computing Competition. It also provides access to practice problems and previous contests.

Instructions, Rules and Language Details

Participants and supervisors should familiarize themselves with the following sources of important information.

Important Links and Login


Any unauthorized access, attempts to circumvent the security controls, or abuse of the system will result in DISQUALIFICATION from all contests.

Starting at 8pm Waterloo time, Tuesday February 20, 2024, the CCC Grader will only be available for the 2024 CCC. It will return to normal operation on the evening of Monday, February 26th.