Semi-Game Cup 2 (2021) Solved 1 or more problems in Semi-Game Cup 2
108
Semi-Game Cup 3 (2022) Solved 1 or more problems in Semi-Game Cup 3
170
Spend 2023 with BOJ Solved 1 or more problems in Hello, BOJ 2023!
290
신촌 5개 학교 혼합 교표 (2호선 ver) (2023) 2023 ICPC Sinchon Summer Algorithm Camp Contest에 출전, 혹은 Open Contest에 출전해 한 문제 이상 해결
295
2023 ICPC Sinchon Winter Algorithm Camp Contest Participated in 2023 ICPC Sinchon Winter Algorithm Camp Contest, or solved 1 or more problems in its open contest
325
2022 Sogang University Freshman Cup Participated in 2022 Sogang University Freshman Cup, or solved 2 or more problems in its open contest
335
2020 with BOJ Solved problem A within the competition time of Good Bye, BOJ 2020!
337
UCPC 2020 Finals Participated in UCPC 2020 Finals
361
UCPC 2021 Participated in UCPC 2021
425
Warmth in the Snow (2022) Solved 1 or more problems in the Invitation of the Winter Forest
462
제1회 유틸컵 - Chapter 1 (2023) 제1회 유틸컵 - Chapter 1에 출전해 1문제 이상 해결
489
(2023) Achieved a score of over 0 in
577
Spent 2022 with BOJ 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
725
Hello, world! (2022) Solved uncountable problem in the Real Final Ghudegy Cup 2 2
747
Binary Game 2 (2022) Solved uncountable problem in the Real Final Ghudegy Cup 2 2
747
★★Twenty-two Stars★★ (2022) Achieved 22-star enchant at the 2022 April Fool's Day Hanbyeol Force Event
1K
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