七

UID: 18486, Registered at 2025-5-9 14:24:55, last login at 2025-5-9 14:24:55, currently offline.

Solved 2 problems, RP: 7 (No. 8536)

♂

Bio

This person is lazy and didn't write anything.
Accepted Problems
P2327
P2336
Recent Activities

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

树的遍历: 1
DFS: 1