Various problem types

Batch, interactive, output-only, and functional / grader (IOI 2010 ) problem types, with and without subtasks. Supports multilanguage problem statement.

Rich contest features

IOI- and ICPC-style contests. Supports virtual contests where contestants can start at different times. Various user roles such as contest managers and supervisors.

Easy to deploy

Packaged as Docker images. Can be easily deployed using our Ansible scripts.