UID: 25, Registered at 2026-2-7 22:14:29, last login at 2026-2-10 22:10:39, currently offline.
Solved 3 problems, RP: 19.5 (No. 32)
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