crystal

UID: 42850, Registered at 2026-6-5 11:20:47, last login at 2026-6-14 1:55:42, last active at 2026-6-14 2:07:02.

Solved 4 problems, RP: 29.5 (No. 9997)

Bio

This person is lazy and didn't write anything.
Accepted Problems
P4091
P4092
P4093
P4094
Recent Activities

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

动态规划: 4