UID: 14163, Registered at 2025-1-7 14:15:34, last login at 2026-8-27 15:09:38, currently offline.
Solved 2 problems, RP: 4 (No. 22170)
By signing up a CodeFun2000 universal account, you can submit code and join discussions in all online judging services provided by us.
Using your CodeFun2000 universal account