Problems
Arena
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
59K
Beginner Problem-solver
Solve 50 problems
Solve 50 problems
94K
Newbie Problem-solver
Solve 10 problems
Solve 10 problems
137K
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
2022 Seoul Cyber University Programming Contest
Participated in 2022 Seoul Cyber University Programming Contest, or solved 1 or more problems in its open contest
Participated in 2022 Seoul Cyber University Programming Contest, or solved 1 or more problems in its open contest
339
Warmth in the Snow (2022)
Solved 1 or more problems in the Invitation of the Winter Forest
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
Solved 1 or more problems in the 2nd Gomgom Cup · © Hana Kim
553
Sogang Programming Contest 2022
Participated in Sogang Programming Competition 2022, or solved 1 or more problems in its open contest
Participated in Sogang Programming Competition 2022, or solved 1 or more problems in its open contest
292
9500-card (2022)
Achieved 9,500 points in the Solved Blackjack Event, 2022
Achieved 9,500 points in the Solved Blackjack Event, 2022
435
Level 7 Sprout
Solved problems for 128 days in a row
Solved problems for 128 days in a row
2.9K
Level 6 Sprout
Solved problems for 64 days in a row
Solved problems for 64 days in a row
5.8K
Level 5 Sprout
Solved problems for 32 days in a row
Solved problems for 32 days in a row
10K
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
70K
Level 1 Sprout
Solved problems for 2 days in a row
Solved problems for 2 days in a row
111K