ruiqi liu
@osky123456
China, Qingdao
Joined Jun 2022
World Rank: #16434 (2 points)
Institution: NO20.school
Activity over the last year
Effectiveness
- Problems solved
- 19
- Solutions submitted
- 49
China, Qingdao
Joined Jun 2022
World Rank: #16434 (2 points)
Institution: NO20.school