努力学习的小鸡

UID: 40519, Registered at 2026-5-13 18:09:43, last login at 2026-5-25 16:07:46, currently offline.

Solved 1 problems, RP: 13.3 (No. 12783)

Bio

This person is lazy and didn't write anything.
Accepted Problems
P4820
Recent Activities

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

选择题: 1