Level 1 Sprout Solved problems for 2 days in a row
123K
Level 2 Sprout Solved problems for 4 days in a row
78K
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 Solved problems for 32 days in a row
11K
The 2nd Korea Aerospace University Programming Contest Participated in the 2nd Korea Aerospace University Programming Contest, or solved 1 or more problems in its open contest
164
Christmas Gift (2022) Earn at least 5 gifts from the Make a Tree event, 2022
725
Spent 2022 with BOJ Solved 1 or more problems in Good Bye, BOJ 2022!
606
SciOI 2022 Participated in SciOI 2022, or solved 1 or more problems in its open contest
226
Newbie Problem-solver Solve 10 problems
150K
Beginner Problem-solver Solve 50 problems
104K
Apprentice Problem-solver Solve 100 problems
66K
Skilled Problem-solver Solve 200 problems
31K
2023 KSA Automata Winter Contest Achieved a score of over 100 in the 2023 KSA Automata Winter Contest
362
Anime Cup (2023) Solved 1 or more problems in Anime Cup Season 1 or 2
766
Spend 2023 with BOJ Solved 1 or more problems in Hello, BOJ 2023!
290
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
The 1st hjroh Cup (2023) Solved 1 or more problems in the 1st hjroh Cup
255
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
Guardian of Balance - Bronze Of the 8 tags displayed on the profile, achieve a rating of over 30 for 4 or more tags