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

kaspy

PupilCertified

koreanmaspySince August 3, 2026

External accounts

Discordasdfsdfs

kaspy's authored problems Submission history

No equipped banner

Current rating

1,274

+74

Peak 1,274 · Top 46.5%

UNRANKED0 Power

Solved problems

Titles

No equipped titles

local_fire_departmentStreak

Current 0 days

SMTWTFS

Rating history

= 1274 (+74), PupilRank: 49DOJ Beginner Contest 5Aug 8, 2026, 10:00 AM

OctNovDec2026FebMarAprMayJunJulAugSepOct

Longest solve streak: 2 days

1-23-56-910-14Freeze

Solve activity is counted from 06:00 in Korea time.

Participation history

3 total

DOJ Beginner Contest 5Window

Aug 8, 2026, 10:00 AM

1st SSAL Olympiad in InformaticsWindow

Aug 3, 2026, 12:00 PM

DOJ Contest 5Window

Aug 1, 2026, 2:00 PM