UID: 23, Registered at 2026-2-7 19:20:38, last login at 2026-2-8 16:07:01, currently offline.
Solved 10 problems, RP: 67 (No. 12)
By signing up a Hydro universal account, you can submit code and join discussions in all online judging services provided by us.
Using your Hydro universal account