Recently added problemsSaved problems

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-backed certification.

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

shinhuichan's authored problems

2 problems

Back to profile

ID	Problem	Difficulty	Accepted	Solved	Status
143	최단 시간shorttime	Platinum III	57%	6	Not tried
271	122333122333	Silver I	61%	17	Not tried