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Ruby IV
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angello10Ruby IV
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Ruby IV 280149 until Ruby III
1,887 Solved535 Contributions11 Reverse rivals
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Date Added# Unlocked UsersTier
  • Anime Cup (2023)
    Solved 1 or more problems in Anime Cup Season 1 or 2
    766
  • 2023 KSA Automata Winter Contest
    2023 KSA Automata Winter Contest
    Achieved a score of over 100 in the 2023 KSA Automata Winter Contest
    362
  • Boardgame Cup (2023)
    Boardgame Cup (2023)
    Solved 1 or more problems in Boardgame Cup
    584
  • 1-Star Problem-solving Technician
    Solve 1,000 problems
    1.4K
  • Professional Problem-solver
    Solve 500 problems
    5.5K
  • Skilled Problem-solver
    Skilled Problem-solver
    Solve 200 problems
    27K
  • Apprentice Problem-solver
    Apprentice Problem-solver
    Solve 100 problems
    58K
  • Beginner Problem-solver
    Solve 50 problems
    92K
  • Newbie Problem-solver
    Newbie Problem-solver
    Solve 10 problems
    134K
  • GBS Coding Contest 2022
    GBS Coding Contest 2022
    Participated in GBS Coding Contest 2022, or solved 1 or more problems in its open contest
    292
  • SciOI 2022
    SciOI 2022
    Participated in SciOI 2022, or solved 1 or more problems in its open contest
    226
  • IamCoder 2022 Year-end Contest
    IamCoder 2022 Year-end Contest
    Participated in IamCoder 2022 Year-end Contest, or in its open contest
    269
  • 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
  • Christmas Gift (2022)
    Christmas Gift (2022)
    Earn at least 5 gifts from the Make a Tree event, 2022
    725
  • 2022 Seoul Cyber University Programming Contest
    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
  • The 9th Hanyang University Programming Contest
    The 9th Hanyang University Programming Contest
    Participated in the 9th Hanyang University Programming Contest, or solved 1 or more problems in its open contest
    284
  • Warmth in the Snow (2022)
    Warmth in the Snow (2022)
    Solved 1 or more problems in the Invitation of the Winter Forest
    462
  • Gomgom Silver Award (2022)
    Gomgom Silver Award (2022)
    Solved 1 or more problems in the 2nd Gomgom Cup · © Hana Kim
    553
  • Gomgom Gold Award (2022)
    Gomgom Gold Award (2022)
    Solved 7 or more problems in the 2nd Gomgom Cup · © Hana Kim
    85
  • Sogang Programming Contest 2022
    Sogang Programming Contest 2022
    Participated in Sogang Programming Competition 2022, or solved 1 or more problems in its open contest
    292
    • 1245678