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Ruby IV
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angello10Ruby IV
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Ruby IV 281139 until Ruby III
2,134 Solved564 Contributions13 Reverse rivals
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Date Added# Unlocked UsersTier
  • 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
    208
  • 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
  • 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
    325
  • SUAPC 2023w
    SUAPC 2023w
    Participated in SUAPC 2023 Winter, or solved 1 or more problems in its open contest
    380
  • 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
    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
    1-Star Problem-solving Technician
    Solve 1,000 problems
    1.7K
  • Skilled Problem-solver
    Skilled Problem-solver
    Solve 200 problems
    31K
  • Apprentice Problem-solver
    Apprentice Problem-solver
    Solve 100 problems
    65K
  • Newbie Problem-solver
    Newbie Problem-solver
    Solve 10 problems
    149K
  • 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
  • 13456789