UID: 22270, Registered at 2025-9-15 9:11:40, last login at 2025-12-22 14:15:42, currently offline.
Solved 3 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