Arena: Quarter Solves ร 5 Participate as a rated contestant for 5 times in the Arena and get full score for quarter or more of the problems in the contest
189
The 1st Chocolate Cup (2022) Solved 1 or more problems in the 1st Chocolate Cup
191
2022 shake! Participated in 2022 shake!, or solved 1 or more problems in its open contest
SciOI 2022 Participated in SciOI 2022, or solved 1 or more problems in its open contest
226
2023 Daegu Software Highschool Programming Contest Participated in the 2023 Daegu Software Highschool Programming Contest, or solved 1 or more problems in its open contest