快乐的溪流

UID: 52800, Registered at 2026-9-1 10:48:06, last login at 2026-9-1 10:48:06, last active at 2026-9-1 16:00:54.

Solved 2 problems, RP: 0 (No. ?)

Bio

This person is lazy and didn't write anything.
Accepted Problems
P14463
P14465
Recent Activities

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

双指针: 1
DFS: 1