Haijun Deng
@denghj1979
China, Beijing
Joined Nov 2012
World Rank: #1213 (23.3 points)
Institution: No
Activity over the last year
Effectiveness
- Problems solved
- 361
- Solutions submitted
- 941
China, Beijing
Joined Nov 2012
World Rank: #1213 (23.3 points)
Institution: No