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Ruby II
2923
27 until Ruby I
1,882
Solved
2
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6
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Achievement
Arena
Season
Event
Contest
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Date Added
# Unlocked Users
Tier
AI Network Scholarium I - 1 Solve
Solved 1 or more problems in AI Network Scholarium I
118
Spend 2023 with BOJ
Solved 1 or more problems in Hello, BOJ 2023!
290
Anime Cup (2023)
Solved 1 or more problems in Anime Cup Season 1 or 2
766
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
Solve 200 problems
27K
Apprentice Problem-solver
Solve 100 problems
58K
Beginner Problem-solver
Solve 50 problems
93K
Newbie Problem-solver
Solve 10 problems
135K
SciOI 2022
Participated in SciOI 2022, or solved 1 or more problems in its open contest
226
Spent 2022 with BOJ
Solved 1 or more problems in Good Bye, BOJ 2022!
606
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
Solved 1 or more problems in the 2022 1st Calculus, Probability, and Statistics Cup
359
Christmas Gift (2022)
Earn at least 5 gifts from the Make a Tree event, 2022
725
Warmth in the Snow (2022)
Solved 1 or more problems in the Invitation of the Winter Forest
462
Gomgom Silver Award (2022)
Solved 1 or more problems in the 2nd Gomgom Cup · © Hana Kim
553
Gomgom Gold Award (2022)
Solved 7 or more problems in the 2nd Gomgom Cup · © Hana Kim
85
2022 IGRUS Newbie Programming Contest
Participated in 2022 IGRUS Newbie Programming Contest, or solved 1 or more problems in its open contest
292
Summer Postcard Decoration: Top 100 (2022)
Achieved a rank of top 100 in the Summer Postcard Decoration event, 2022
98
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