Recently added problemsSaved problemsWorkbooks

Categories DLC Contests Groups Teams Board

Solved Problem RankingStreak rankingDOJ Power ranking

Call for TasksLogin Register

DOJ

Community online judge with OI-style subtask scoring, Elo ratings, and Discord account linking.

Problems

Problems Categories

Community

Contests Ranking Board Notices Host an external contest Guide

Account

Login Register Judge Status

Policy

Terms of Service DLC Rules Privacy API documentation Language runtimes Contest rank rewards Rating and performance

© 2026 DOJ

All rights reserved

js7777

2 problems

ID	Problem	Difficulty	Accepted	Solved	Status
578	홈즈와 왓슨의 내기holmeswatson	Diamond I	33%	2	Not tried
636	홈즈와 왓슨의 내기 (Large)watson2	Ruby IV	75%	2	Not tried