Problems
Arena
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
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
Achieved a score of over 41 in the Dress Rehearsal
441
1-Star Problem-solving Technician
Solve 1,000 problems
Solve 1,000 problems
1.4K
Professional Problem-solver
Solve 500 problems
Solve 500 problems
5.6K
Skilled Problem-solver
Solve 200 problems
Solve 200 problems
27K
Apprentice Problem-solver
Solve 100 problems
Solve 100 problems
58K
Beginner Problem-solver
Solve 50 problems
Solve 50 problems
93K
Newbie Problem-solver
Solve 10 problems
Solve 10 problems
135K
2 Solves
Celebrated the 2nd anniversary of solved.ac
Celebrated the 2nd anniversary of solved.ac
9.7K
Spent 2021 with BOJ
Solved 1 or more problems in Good Bye, BOJ 2021!
Solved 1 or more problems in Good Bye, BOJ 2021!
644
Level 6 Sprout
Solved problems for 64 days in a row
Solved problems for 64 days in a row
5.7K
Level 5 Sprout
Solved problems for 32 days in a row
Solved problems for 32 days in a row
9.9K
Level 4 Sprout
Solved problems for 16 days in a row
Solved problems for 16 days in a row
17K
Level 3 Sprout
Solved problems for 8 days in a row
Solved problems for 8 days in a row
32K
Level 2 Sprout
Solved problems for 4 days in a row
Solved problems for 4 days in a row
69K
Level 1 Sprout
Solved problems for 2 days in a row
Solved problems for 2 days in a row
110K
21st National Assembly Election (2020)
Solved the 21st National Assembly Election problem (#18891) by April 21, 2020
Solved the 21st National Assembly Election problem (#18891) by April 21, 2020
56