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Badges

Sort — Date Added ↓# Unlocked Users Tier
  • A yellow badge with a blue ribbon that seems to fit somewhere (2023)
    Solved a problem with ‘41’ in its ID, between 6:00 AM April 1, 2023 KST and 1:00 AM April 3, 2023 KST
    1.2K
  • Dress Rehearsal (2023)
    Dress Rehearsal (2023)
    Achieved a score of over 41 in the Dress Rehearsal
    442
  • AI Network Scholarium I - 4 Solves
    AI Network Scholarium I - 4 Solves
    Solved 4 or more problems in AI Network Scholarium I
    17
  • AI Network Scholarium I - 1 Solve
    AI Network Scholarium I - 1 Solve
    Solved 1 or more problems in AI Network Scholarium I
    118
  • 2022 shake!
    2022 shake!
    Participated in 2022 shake!, or solved 1 or more problems in its open contest
    210
  • 2023 Chung-Ang University CHAC
    2023 Chung-Ang University CHAC
    Participated in 2023 Chung-Ang University CHAC, or achieved a score of over 10 in its open contest
    342
  • The 1st hjroh Cup (2023)
    The 1st hjroh Cup (2023)
    Solved 1 or more problems in the 1st hjroh Cup
    255
  • 2023 ICPC Sinchon Winter Algorithm Camp Contest
    2023 ICPC Sinchon Winter Algorithm Camp Contest
    Participated in 2023 ICPC Sinchon Winter Algorithm Camp Contest, or solved 1 or more problems in its open contest
    326
  • SUAPC 2023w
    SUAPC 2023w
    Participated in SUAPC 2023 Winter, or solved 1 or more problems in its open contest
    381
  • Spend 2023 with BOJ
    Spend 2023 with BOJ
    Solved 1 or more problems in Hello, BOJ 2023!
    290
  • Anime Cup (2023)
    Anime Cup (2023)
    Solved 1 or more problems in Anime Cup Season 1 or 2
    772
  • 2023 KSA Automata Winter Contest
    2023 KSA Automata Winter Contest
    Achieved a score of over 100 in the 2023 KSA Automata Winter Contest
    363
  • The 2nd MatKor Cup : 2023 Winter
    The 2nd MatKor Cup : 2023 Winter
    Participated in the 2nd MatKor Cup, or solved 1 or more problems in its open contest
    475
  • Boardgame Cup (2023)
    Boardgame Cup (2023)
    Solved 1 or more problems in Boardgame Cup
    584
  • 2-Star Problem-solving Technician
    Solve 2,000 problems
    200
  • 1-Star Problem-solving Technician
    1-Star Problem-solving Technician
    Solve 1,000 problems
    898
  • Professional Problem-solver
    Professional Problem-solver
    Solve 500 problems
    3.7K
  • Skilled Problem-solver
    Skilled Problem-solver
    Solve 200 problems
    18K
  • Apprentice Problem-solver
    Apprentice Problem-solver
    Solve 100 problems
    41K
  • Beginner Problem-solver
    Solve 50 problems
    67K
    • 12346