【入门】求圆环的面积

状态	递交者	时间	内存	语言	代码	递交时间
AC	20243011	2ms	2.1 MiB	C++	134 Bytes	2024-12-1 17:31:41
AC	20243043	3ms	2.1 MiB	C++	162 Bytes	2024-12-1 19:56:23
AC	20243049	3ms	2.1 MiB	C++	143 Bytes	2024-12-8 19:32:44
AC	415411	4ms	2.1 MiB	C++	208 Bytes	2025-1-29 13:21:40
AC	SD20240001	4ms	2.1 MiB	C++	181 Bytes	2025-5-11 22:42:33
AC	15198268269	4ms	2.1 MiB	C++	341 Bytes	2025-3-15 8:52:20
AC	20243106	4ms	2.1 MiB	C++	162 Bytes	2025-3-26 13:37:34
AC	20243089	4ms	2.1 MiB	C++	162 Bytes	2025-3-26 13:10:17
AC	20243046	4ms	2.1 MiB	C++	153 Bytes	2024-11-23 22:35:07
AC	gr1	5ms	2.1 MiB	C++	160 Bytes	2025-3-16 19:21:27
AC	20243111	5ms	2.1 MiB	C++	162 Bytes	2025-4-23 13:15:30
AC	20243033	5ms	2.1 MiB	C++	150 Bytes	2025-3-26 13:08:33