Ryotaro Okuyama
@o1810156
Japan, Chofu
Joined May 2019
World Rank: #34809 (0.7 points)
Institution: UEC
Activity over the last year
Effectiveness
- Problems solved
- 26
- Solutions submitted
- 215
Japan, Chofu
Joined May 2019
World Rank: #34809 (0.7 points)
Institution: UEC