诚恳的银杏

UID: 53669, Registered at 2026-9-3 23:28:08, last login at 2026-9-14 16:40:06, last active at 2026-9-14 17:24:04.

Solved 2 problems, RP: 6 (No. 20979)

Bio

This person is lazy and didn't write anything.
Accepted Problems
P500
P4011
Recent Activities

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

入门教程: 1