CodeFun6551ccd4bb

UID: 17402, Registered at 2025-4-15 21:34:09, last login at 2025-4-15 21:34:09, currently offline.

Solved 2 problems, RP: 13 (No. 6891)

Bio

This person is lazy and didn't write anything.
Accepted Problems
P2806
P2906
Recent Activities

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

DFS: 1
树上差分: 1
lca: 1