注册于 2023-02-28 13:31:03, 最后登录于 2023-03-14 13:36:35, 目前离线.
解决了 10 道题目,RP: 610.07 (No. 239)
By signing up a OPS universal account, you can submit code and join discussions in all online judging services provided by us.
Using your OPS universal account