灰羊羊

UID: 39425, Registered at 2026-5-6 15:42:56, last login at 2026-5-6 15:42:56, last active at 2026-5-14 16:09:17.

Solved 3 problems, RP: 3 (No. 16577)

Bio

This person is lazy and didn't write anything.
Accepted Problems
P4492
P4493
P4494
Recent Activities

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

入门教程: 3