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Gold IV
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dragon1308Gold IV
dragon13082
Gold IV 103367 until Gold III

irreplaceable

895 Solved4 Reverse rivals
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Date Added# Unlocked UsersTier
  • Level 1 Sprout
    Solved problems for 2 days in a row
    122K
  • Level 2 Sprout
    Level 2 Sprout
    Solved problems for 4 days in a row
    77K
  • Level 3 Sprout
    Level 3 Sprout
    Solved problems for 8 days in a row
    36K
  • Level 4 Sprout
    Solved problems for 16 days in a row
    19K
  • Level 5 Sprout
    Level 5 Sprout
    Solved problems for 32 days in a row
    11K
  • Level 6 Sprout
    Solved problems for 64 days in a row
    6.6K
  • Level 7 Sprout
    Level 7 Sprout
    Solved problems for 128 days in a row
    3.4K
  • Level 8 Sprout
    Level 8 Sprout
    Solved problems for 256 days in a row
    1.6K
  • Level 9 Sprout
    Level 9 Sprout
    Solved problems for 512 days in a row
    592
  • 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
  • Newbie Problem-solver
    Newbie Problem-solver
    Solve 10 problems
    149K
  • Beginner Problem-solver
    Beginner Problem-solver
    Solve 50 problems
    103K
  • Apprentice Problem-solver
    Apprentice Problem-solver
    Solve 100 problems
    65K
  • Skilled Problem-solver
    Skilled Problem-solver
    Solve 200 problems
    31K
  • Professional Problem-solver
    Professional Problem-solver
    Solve 500 problems
    6.4K
  • Boardgame Cup (2023)
    Boardgame Cup (2023)
    Solved 1 or more problems in Boardgame Cup
    584
  • 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
  • 2023 UDPC
    2023 UDPC
    Participated in the 2023 UDPC, or solved 1 or more problems in its open contest
    349
  • Guardian of Balance - Bronze
    Guardian of Balance - Bronze
    Of the 8 tags displayed on the profile, achieve a rating of over 30 for 4 or more tags
    104K
  • Master of Balance - Bronze
    Master of Balance - Bronze
    Of the 8 tags displayed on the profile, achieve a rating of over 30 for 6 or more tags
    77K
    • 12