Chester Alfred
@dralfred
China, 上海
Joined Sep 2022
World Rank: #10949 (3.2 points)
Institution: None
SH OIer
Activity over the last year
Effectiveness
- Problems solved
- 42
- Solutions submitted
- 95
China, 上海
Joined Sep 2022
World Rank: #10949 (3.2 points)
Institution: None
SH OIer