UID: 1976, Registered at 2024-9-3 10:02:50, last login at 2025-9-17 11:30:34, currently offline.
Solved 2 problems, RP: 12 (No. 620)
Hello!
By signing up a HFOJ universal account, you can submit code and join discussions in all online judging services provided by us.
Using your HFOJ universal account