Introduction

Judgels is a modern programming contest system.

Usage

Judgels has been used for:

• TLX, Indonesia's largest competitive programming training website.
• Indonesian National Olympiad in Informatics since 2015.
• Asia-Pacific Informatics Olympiad 2015 & 2020, hosted by Indonesia.

Features

This is a non-exhaustive list of Judgels's features:

Problem management

• multilanguage problem statements
• batch, interactive, output-only, and functional (like IOI 2010 and beyond) problem types
• custom checker (scorer)
• subtasks with different points
• version control

Contest management

• IOI- and ICPC-style contests
• virtual contests, where contestants can start at different times
• announcements, clarifications, scoreboards
• various user roles: contestants, supervisors, and managers