Problems
Arena
Level 1 Sprout
Solved problems for 2 days in a row
Solved problems for 2 days in a row
125K
Level 2 Sprout
Solved problems for 4 days in a row
Solved problems for 4 days in a row
79K
Level 3 Sprout
Solved problems for 8 days in a row
Solved problems for 8 days in a row
37K
Level 4 Sprout
Solved problems for 16 days in a row
Solved problems for 16 days in a row
20K
Level 5 Sprout
Solved problems for 32 days in a row
Solved problems for 32 days in a row
12K
Level 6 Sprout
Solved problems for 64 days in a row
Solved problems for 64 days in a row
6.7K
Level 7 Sprout
Solved problems for 128 days in a row
Solved problems for 128 days in a row
3.5K
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
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
The 9th Hanyang University Programming Contest
Participated in the 9th Hanyang University Programming Contest, or solved 1 or more problems in its open contest
Participated in the 9th Hanyang University Programming Contest, or solved 1 or more problems in its open contest
284
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
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 1st Calculus, Probability, and Statistics Cup
Solved 1 or more problems in the 2022 1st Calculus, Probability, and Statistics Cup
Solved 1 or more problems in the 2022 1st Calculus, Probability, and Statistics Cup
359
GBS Coding Contest 2022
Participated in GBS Coding Contest 2022, or solved 1 or more problems in its open contest
Participated in GBS Coding Contest 2022, or solved 1 or more problems in its open contest
292
Newbie Problem-solver
Solve 10 problems
Solve 10 problems
152K
Beginner Problem-solver
Solve 50 problems
Solve 50 problems
106K
Apprentice Problem-solver
Solve 100 problems
Solve 100 problems
67K
Skilled Problem-solver
Solve 200 problems
Solve 200 problems
31K
Boardgame Cup (2023)
Solved 1 or more problems in Boardgame Cup
Solved 1 or more problems in Boardgame Cup
584
The 2nd MatKor Cup : 2023 Winter
Participated in the 2nd MatKor Cup, or solved 1 or more problems in its open contest
Participated in the 2nd MatKor Cup, or solved 1 or more problems in its open contest
473