UID: 52, Registered at 2026-2-15 21:20:16, last login at 2026-2-20 20:35:21, currently offline.
Solved 3 problems, RP: 15 (No. 36)
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