optimist rookie

UID: 44104, Registered at 2026-6-22 10:27:55, last login at 2026-6-22 10:27:55, currently offline.

Solved 1 problems, RP: 3 (No. 19400)

♂

Bio

永远年轻，永远热泪盈眶
Accepted Problems
P14401
Recent Activities

This person is lazy and didn't join any contests or homework.

双指针: 1