Recently added problemsSaved problems

Categories DLC Contests Groups Teams Board

Solved Problem RankingStreak ranking

Call for TasksLogin Register

Loading page...

Preparing the next screen and the freshest data.

DOJ

Community online judge with OI-style subtask scoring, Elo ratings, and Discord-backed certification.

Problems

Problems Categories

Community

Contests Ranking Board Notices Host an external contest Guide

Account

Login Register Judge Status

Policy

Privacy API documentation Language runtimes Contest rank rewards

© 2026 DOJ

All rights reserved

Registered participants

2026 Centroid Cup Open Contest

Back to contest

Registered list Friends

28

encoreNo organization

orangeTeamTeam account

jtw7913고려대학교 세종캠퍼스

rich_chanelNo organization

tropical_potato공주대학교 천안

cjh_cpp강원과학고등학교

carrrotNo organization

rohysNo organization

Previous2 / 2Next