UID: 21415, Registered at 2025-9-6 21:22:40, last login at 2025-9-6 21:22:40, currently offline.
Solved 2 problems, RP: 9 (No. 11187)
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