psong
UID: 10665, Registered at 9 months ago, last login at 8 months ago, currently offline.
Solved 1 problems, RP: 3 (No. 8161)
- Bio
- Accepted Problems
- Recent Activities
This person is lazy and didn't write anything.
This person is lazy and didn't join any contests or homework.
Problem Tags
- oppo
- 1