This year (2021): COVID-19 has disrupted life here in Ontario and around the world for over a year now. Since in-person competitions are again not possible, ECOO-CS is sponsoring and supporting another online contest for Ontario secondary students.

The contest consists of two stages: A Practice Contest (15-20 April 2021) and a Main Contest (Saturday, 1 May 2021, 11am to 2pm EDT). As per last year the contest will be between individuals rather than teams.

Further information, Rules, and Registration access can be found at 2021 ECOO-CS Programming Contest. Registration closes 14 April 2021 at 6pm EDT.

Last year (2020): A special thank you goes out to Ms Valentina Krasteva and her students (Steven Guikal, Junyi Wang, and Evan Zhang) from William Lyon Mackenzie Collegiate Institute in Toronto for establishing, setting up and operating the contest on Saturday, 2 May, from 10am to 3pm.

Over 600 students from 110 schools from 21 school boards plus independent schools participated as individuals in this online contest from home.

The rankings of participants who earned points can be found on Final Results.

The problems with input and output data may be located under: Past Contests - Problem Sets.