Christmas Gift (2022) Earn at least 5 gifts from the Make a Tree event, 2022
725
A yellow badge with a blue ribbon that seems to fit somewhere (2023) Solved a problem with โ41โ in its ID, between 6:00 AM April 1, 2023 KST and 1:00 AM April 3, 2023 KST
1.2K
Not a Robot Met a developer of solved.ac at an event hosted or sponsored by solved.ac with 20+ participants