chengjun chen
@ccj
China, Shanghai
Joined Sep 2017
World Rank: #4273 (8.1 points)
Institution: Fudan University
Activity over the last year
Effectiveness
- Problems solved
- 47
- Solutions submitted
- 194
China, Shanghai
Joined Sep 2017
World Rank: #4273 (8.1 points)
Institution: Fudan University