A yellow badge with a blue ribbon that seems to fit somewhere (2023) Solved a problem with ‘41’ in its ID, between 6:00 AM April 1, 2023 KST and 1:00 AM April 3, 2023 KST
1.2K
Dress Rehearsal (2023) Achieved a score of over 41 in the Dress Rehearsal
441
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
Professional Problem-solver Solve 500 problems
6.6K
Skilled Problem-solver Solve 200 problems
31K
Apprentice Problem-solver Solve 100 problems
66K
Beginner Problem-solver Solve 50 problems
105K
Newbie Problem-solver Solve 10 problems
151K
SciOI 2022 Participated in SciOI 2022, or solved 1 or more problems in its open contest
226
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