DOJ logoDOJ
Problems
Recently added problemsSaved problems
CategoriesDLCContestsGroupsTeamsBoard
Ranking
Solved Problem RankingStreak rankingDOJ Power ranking
Status
Call for TasksLoginRegister
DOJ logoDOJ

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

Problems
ProblemsCategories
Community
ContestsRankingBoardNoticesHost an external contestGuide
Account
LoginRegisterJudge Status
Policy
Terms of ServiceDLC RulesPrivacyAPI documentationLanguage runtimesContest rank rewardsRating and performance
© 2026 DOJ
All rights reserved
S

slow09

MasterCertified
한국디지털미디어고등학교Since May 5, 2026
KDMHS 24WP
External accounts
Codeforcesslow09Discordslow_92997
slow09's authored problemsSubmission history
「【코딩】의 마법을 지닌 마법소녀」
「【코딩】의 마법을 지닌 마법소녀」
그림 ·ともえ캐릭터 출처 ·solved.ac배경 출처 ·Acacia
Current rating
2,000
-50
Peak 2,114 · Top 8.2%
DOJ Power
SENIOR III573.31 Power
Solved problems
119
Titles
KOI 2026 Round 2 Silver Medal, 6th place2026 Korea TST 13th placeSJOI 2024 Silver Medal, 2nd place (Middle)

Equipped gear

Background「【코딩】의 마법을 지닌 마법소녀」star 7
local_fire_departmentStreak

Current 2 days

SMTWTFS

Rating history

10001329165719862314= 1342 (+142), PupilRank: 18DOJ Contest 1May 5, 2026, 12:00 PM= 1569 (+227), SpecialistRank: 15DOJ Beginner Contest 2May 30, 2026, 1:00 PM= 1635 (+66), ExpertRank: 27DOJ Beginner Contest 3Jun 14, 2026, 7:00 PM= 1774 (+139), ExpertRank: 20아니메컵 3기 ~2시에 코딩을 하는 건 이상해!~Jul 4, 2026, 2:00 PM= 1783 (+9), ExpertRank: 21DOJ Beginner Contest 4Jul 8, 2026, 9:00 PM= 1940 (+157), Candidate MasterRank: 8KOI 2nd Round Mock 2 [High]Jul 17, 2026, 9:00 AM= 1934 (-6), Candidate MasterRank: 30DOJ Beginner Contest 5Aug 8, 2026, 10:00 AM= 2114 (+180), MasterRank: 7EZ Contest Day 2Aug 22, 2026, 9:00 AM= 2009 (-105), MasterRank: 39DOJ Beginner Contest 6Aug 30, 2026, 10:00 AM= 1999 (-10), Candidate MasterRank: 30DOJ Beginner Contest 7Sep 6, 2026, 10:00 AM= 2040 (+41), MasterRank: 24DOJ Beginner Contest 8Sep 13, 2026, 10:00 AM= 2050 (+10), MasterRank: 9DOJ Grand Contest 1 (Div 2)Sep 24, 2026, 10:00 AM= 2000 (-50), MasterRank: 38DOJ Beginner Contest 10Sep 27, 2026, 10:00 AM
OctNovDec2026FebMarAprMayJunJulAugSepOct
Longest solve streak: 6 days
1-23-56-910-14Freeze

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

Participation history

15 total
DOJ Beginner Contest 10Window
Sep 27, 2026, 10:00 AM
Score 1500Rank 38
AI slop 2Unrated
Sep 25, 2026, 2:40 AM
Score 0Rank 34
DOJ Grand Contest 1 (Div 2)Window
Sep 24, 2026, 10:00 AM
Score 430Rank 9
DOJ Beginner Contest 8Window
Sep 13, 2026, 10:00 AM
Score 668Rank 24
DOJ Beginner Contest 7Window
Sep 6, 2026, 10:00 AM
Score 497Rank 30
DOJ Beginner Contest 6Window
Aug 30, 2026, 10:00 AM
Score 400Rank 39
AI slopUnrated
Aug 24, 2026, 11:30 PM
Score 0Rank 17
EZ Contest Day 2Window
Aug 22, 2026, 9:00 AM
Score 315Rank 7
DOJ Beginner Contest 5Window
Aug 8, 2026, 10:00 AM
Score 433Rank 30
KOI 2nd Round Mock 2 [High]Window
Jul 17, 2026, 9:00 AM
Score 352Rank 8
DOJ Beginner Contest 4Rated
Jul 8, 2026, 9:00 PM
Score 500Rank 21
아니메컵 3기 ~2시에 코딩을 하는 건 이상해!~Rated
Jul 4, 2026, 2:00 PM
Score 1200Rank 20
DOJ Beginner Contest 3Window
Jun 14, 2026, 7:00 PM
Score 600Rank 27
DOJ Beginner Contest 2Window
May 30, 2026, 1:00 PM
Score 655Rank 15
DOJ Contest 1Rated
May 5, 2026, 12:00 PM
Score 0Rank 18