YR

UID: 25123, Registered at 2025-10-15 22:50:39, last login at 2026-9-13 20:59:37, last active at 2026-9-14 11:23:04.

Solved 3 problems, RP: 4.5 (No. 23074)

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