Problems
Arena
Beginner Problem-solver
Solve 50 problems
Solve 50 problems
104K
Newbie Problem-solver
Solve 10 problems
Solve 10 problems
149K
SciOI 2022
Participated in SciOI 2022, or solved 1 or more problems in its open contest
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!
Solved 1 or more problems in Good Bye, BOJ 2022!
606
Christmas Gift (2022)
Earn at least 5 gifts from the Make a Tree event, 2022
Earn at least 5 gifts from the Make a Tree event, 2022
725
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
Participated in the 2nd Korea Aerospace University Programming Contest, or solved 1 or more problems in its open contest
164
Level 5 Sprout
Solved problems for 32 days in a row
Solved problems for 32 days in a row
11K
Level 4 Sprout
Solved problems for 16 days in a row
Solved problems for 16 days in a row
19K
Level 3 Sprout
Solved problems for 8 days in a row
Solved problems for 8 days in a row
36K
Level 2 Sprout
Solved problems for 4 days in a row
Solved problems for 4 days in a row
78K
Level 1 Sprout
Solved problems for 2 days in a row
Solved problems for 2 days in a row
123K