DOJ logoDOJ
Problems
Recently added problemsSaved problemsWorkbooks
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 account linking.

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
DOJ/Beginner Contest DOJ/BCD 9
PROBLEMSET

BCD 9

Leaf category100 min virtualHidden scoreboard
[0]

Virtual participation

Log in required

Scoreboard

Standings
#ProblemDifficultyAcceptanceSolvedStatus
AAI slopaislopBronze IV
84%
110Opens after virtual start
BRating UpdatesratingupdateBronze III
94%
100Opens after virtual start
CYet Another Permutation Problem 2permutation2Silver III
74%
96Opens after virtual start
DHarvesting the FarmfarmharvestSilver II
71%
83Opens after virtual start
E67sixtysevenGold III
53%
61Opens after virtual start
FAll Falls DownallfallsdownPlatinum IV
38%
50Opens after virtual start
GPi ProblempiproblemPlatinum IV
30%
43Opens after virtual start
HLadders and QueriesladderqueriesPlatinum V
27%
32Opens after virtual start
IDeletion 2deletion2Diamond III
6%
5Opens after virtual start
Open linked main contest