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Diamond IV
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herdsonDiamond IV
herdson7
Diamond IV 234654 until Diamond III

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2,091 Solved376 Contributions13 Reverse rivals
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Date Added# Unlocked UsersTier
  • Beta Contributor
    Beta Contributor
    Contributed once or more between July 13, 2019 and June 4, 2020
    442
  • 2020 with BOJ
    2020 with BOJ
    Solved problem A within the competition time of Good Bye, BOJ 2020!
    337
  • UCPC 2021
    UCPC 2021
    Participated in UCPC 2021
    425
  • Level 1 Sprout
    Solved problems for 2 days in a row
    123K
  • Level 2 Sprout
    Level 2 Sprout
    Solved problems for 4 days in a row
    78K
  • 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
  • ★★Seventeen Stars★★ (2022)
    ★★Seventeen Stars★★ (2022)
    Achieved 17-star enchant at the 2022 April Fool's Day Hanbyeol Force Event
    2.1K
  • Chicken Dance (2022)
    Chicken Dance (2022)
    Solved 1 or more problems in the 1st Gomgom Cup · © Hana Kim
    586
  • 2022 Sogang University Freshman Cup
    2022 Sogang University Freshman Cup
    Participated in 2022 Sogang University Freshman Cup, or solved 2 or more problems in its open contest
    335
  • 2 Solves
    2 Solves
    Celebrated the 2nd anniversary of solved.ac
    9.7K
  • UCPC 2022
    UCPC 2022
    Participated in UCPC 2022, or its open contest
    991
  • Summer Postcard Decoration: Top 1,000 (2022)
    Summer Postcard Decoration: Top 1,000 (2022)
    Achieved a rank of top 1,000 in the Summer Postcard Decoration event, 2022
    884
  • Newbie Problem-solver
    Newbie Problem-solver
    Solve 10 problems
    149K
  • Beginner Problem-solver
    Beginner Problem-solver
    Solve 50 problems
    104K
  • Apprentice Problem-solver
    Apprentice Problem-solver
    Solve 100 problems
    65K
  • Skilled Problem-solver
    Skilled Problem-solver
    Solve 200 problems
    31K
    • 123