UID: 2842, Registered at 2025-9-2 14:50:15, last login at 2025-9-19 12:05:04, currently offline.
Solved 1 problems, RP: 3 (No. 759)
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