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by 李柯欣 @ 2022-07-07 20:06:02
+1 Cu ball
by 2009Matianle @ 2022-07-21 17:00:14
你不能cin>>u>>a[u]，
试下分开写:)
by bingoyes @ 2022-08-29 08:06:50
@[kexinluo](/user/508834) 样例能过，就是cin的问题
by 聊机 @ 2022-12-26 16:31:45