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

loop0919

Specialist

No organizationSince September 5, 2026

External accounts

AtCoderloop0919 Discord∞ループ∞X@for_i_in_loop

loop0919's authored problems Submission history

AI

DOJ Grand Contest 1

Emoji ·Twitter

Current rating

1,529

+423

Peak 1,529 · Top 8.3%

UNRANKED0 Power

Solved problems

Titles

No equipped titles

local_fire_departmentStreak

Current 0 days

Past year 2026

SMTWTFS

Rating history

= 591 (+591), NewbieRank: 49DOJ Beginner Contest 6Aug 30, 2026, 10:00 AM = 1106 (+515), NewbieRank: 18DOJ Grand Contest 1 (Div 2)Sep 24, 2026, 10:00 AM = 1529 (+423), SpecialistRank: 32DOJ Beginner Contest 10Sep 27, 2026, 10:00 AM

NovDec2026FebMarAprMayJunJulAugSepOctNov

Longest solve streak: 1 days

1-23-56-910-14Freeze

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

Participation history

3 total

DOJ Beginner Contest 10Window

Sep 27, 2026, 10:00 AM

Score 1500Rank 32

DOJ Grand Contest 1 (Div 2)Window

Sep 24, 2026, 10:00 AM

Score 351Rank 18

DOJ Beginner Contest 6Window

Aug 30, 2026, 10:00 AM

Score 325Rank 49