UID: 49391, Registered at 2026-8-11 9:59:15, last login at 2026-8-11 9:59:15, currently offline.
Solved 5 problems, RP: 5 (No. 20821)
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