UID: 1936, Registered at 2023-4-8 21:22:26, last login at 2023-4-9 9:48:46, currently offline.
Solved 2 problems, RP: 7 (No. 4632)
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