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Ruby II
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flappybirdRuby II
flappybird9
Ruby II 292525 until Ruby I
1,109 Solved464 Contributions32 Reverse rivals
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Date Added# Unlocked UsersTier
  • UCPC 2022
    Participated in UCPC 2022, or its open contest
    991
  • Semi-Game Cup 3 (2022)
    Semi-Game Cup 3 (2022)
    Solved 1 or more problems in Semi-Game Cup 3
    170
  • The 1st Chocolate Cup (2022)
    The 1st Chocolate Cup (2022)
    Solved 1 or more problems in the 1st Chocolate Cup
    191
  • Warmth in the Snow (2022)
    Warmth in the Snow (2022)
    Solved 1 or more problems in the Invitation of the Winter Forest
    462
  • 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
  • IamCoder 2022 Year-end Contest
    IamCoder 2022 Year-end Contest
    Participated in IamCoder 2022 Year-end Contest, or in its open contest
    269
  • Spent 2022 with BOJ
    Spent 2022 with BOJ
    Solved 1 or more problems in Good Bye, BOJ 2022!
    606
  • Beginner Problem-solver
    Beginner Problem-solver
    Solve 50 problems
    100K
  • Apprentice Problem-solver
    Apprentice Problem-solver
    Solve 100 problems
    63K
  • Skilled Problem-solver
    Skilled Problem-solver
    Solve 200 problems
    29K
  • Professional Problem-solver
    Professional Problem-solver
    Solve 500 problems
    6.1K
  • 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
  • The 1st hjroh Cup (2023)
    The 1st hjroh Cup (2023)
    Solved 1 or more problems in the 1st hjroh Cup
    255
  • 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
  • 12345