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15,302 Solved4,239 Contributions42 Reverse rivals
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Date Added# Unlocked UsersTier
  • 2022 Seoul Cyber University Programming Contest
    Participated in 2022 Seoul Cyber University Programming Contest, or solved 1 or more problems in its open contest
    339
  • 2022 1st Calculus, Probability, and Statistics Cup
    2022 1st Calculus, Probability, and Statistics Cup
    Solved 1 or more problems in the 2022 1st Calculus, Probability, and Statistics Cup
    359
  • Spent 2022 with BOJ
    Spent 2022 with BOJ
    Solved 1 or more problems in Good Bye, BOJ 2022!
    606
  • SciOI 2022
    SciOI 2022
    Participated in SciOI 2022, or solved 1 or more problems in its open contest
    226
  • Beginner Problem-solver
    Beginner Problem-solver
    Solve 50 problems
    93K
  • Apprentice Problem-solver
    Apprentice Problem-solver
    Solve 100 problems
    58K
  • Skilled Problem-solver
    Skilled Problem-solver
    Solve 200 problems
    27K
  • Professional Problem-solver
    Professional Problem-solver
    Solve 500 problems
    5.5K
  • 2-Star Problem-solving Technician
    2-Star Problem-solving Technician
    Solve 2,000 problems
    322
  • Boardgame Cup (2023)
    Boardgame Cup (2023)
    Solved 1 or more problems in Boardgame Cup
    584
  • 2023 KSA Automata Winter Contest
    2023 KSA Automata Winter Contest
    Achieved a score of over 100 in the 2023 KSA Automata Winter Contest
    362
  • Anime Cup (2023)
    Anime Cup (2023)
    Solved 1 or more problems in Anime Cup Season 1 or 2
    766
  • Spend 2023 with BOJ
    Spend 2023 with BOJ
    Solved 1 or more problems in Hello, BOJ 2023!
    290
  • SUAPC 2023w
    SUAPC 2023w
    Participated in SUAPC 2023 Winter, or solved 1 or more problems in its open contest
    380
  • 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
    325
  • 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
    341
  • AI Network Scholarium I - 1 Solve
    AI Network Scholarium I - 1 Solve
    Solved 1 or more problems in AI Network Scholarium I
    118
  • 1234567