ydn

UID: 40558, Registered at 2026-5-13 21:51:02, last login at 2026-9-11 0:03:55, currently offline.

Solved 2 problems, RP: 9.8 (No. 18862)

Bio

This person is lazy and didn't write anything.
Accepted Problems
P4003
P4940
Recent Activities

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

双指针: 1