Hisashi SHIRAKATA
@shiratty8
Japan, Tokyo
Joined Jul 2016
World Rank: #11589 (3 points)
Institution: RCO
Activity over the last year
Effectiveness
- Problems solved
- 30
- Solutions submitted
- 137
Japan, Tokyo
Joined Jul 2016
World Rank: #11589 (3 points)
Institution: RCO