Problems
Arena
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
2-Star Problem-solving Technician
Solve 2,000 problems
Solve 2,000 problems
362
1-Star Problem-solving Technician
Solve 1,000 problems
Solve 1,000 problems
1.6K
Professional Problem-solver
Solve 500 problems
Solve 500 problems
6.1K
Skilled Problem-solver
Solve 200 problems
Solve 200 problems
29K
Apprentice Problem-solver
Solve 100 problems
Solve 100 problems
63K
Beginner Problem-solver
Solve 50 problems
Solve 50 problems
100K
Newbie Problem-solver
Solve 10 problems
Solve 10 problems
145K
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
IamCoder 2022 Year-end Contest
Participated in IamCoder 2022 Year-end Contest, or in its open contest
Participated in IamCoder 2022 Year-end Contest, or in its open contest
269
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
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
2022 IGRUS Newbie Programming Contest
Participated in 2022 IGRUS Newbie Programming Contest, or solved 1 or more problems in its open contest
Participated in 2022 IGRUS Newbie Programming Contest, or solved 1 or more problems in its open contest
292
Top Contributor, Season 2021
Top 100 contributor by contributions count in the 2021 season
Top 100 contributor by contributions count in the 2021 season
100
UCPC 2022
Participated in UCPC 2022, or its open contest
Participated in UCPC 2022, or its open contest
991
2 Solves
Celebrated the 2nd anniversary of solved.ac
Celebrated the 2nd anniversary of solved.ac
9.7K
Chicken Dance (2022)
Solved 1 or more problems in the 1st Gomgom Cup · © Hana Kim
Solved 1 or more problems in the 1st Gomgom Cup · © Hana Kim
586
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 9 Sprout
Solved problems for 512 days in a row
Solved problems for 512 days in a row
545