Rian RajaGD
@rian_ikhwan
Indonesia
Joined Dec 2010
World Rank: #31960 (0.8 points)
Institution: SMAN 5 Surabaya
Activity over the last year
Effectiveness
- Problems solved
- 11
- Solutions submitted
- 191
Indonesia
Joined Dec 2010
World Rank: #31960 (0.8 points)
Institution: SMAN 5 Surabaya