[语言过关]求梯形的面积

Status	Submit By	Time	Memory	Language	Code	Submit At
AC	TYHS.Kr	2ms	6.4 MiB	C++14(O2)	161 Bytes	2023-12-6 16:39:37
AC	Morning	2ms	6.4 MiB	C++14(O2)	170 Bytes	2023-12-7 22:17:37
AC	Morning	2ms	6.4 MiB	C++14(O2)	168 Bytes	2023-12-12 19:44:05
AC	zhiyinnitaimei	2ms	6.4 MiB	C++14(O2)	153 Bytes	2023-12-12 19:47:50
AC	ibaraki	3ms	6.4 MiB	C++14(O2)	175 Bytes	2023-12-12 19:46:05
AC	ChristinaYo	4ms	6.4 MiB	C++14(O2)	175 Bytes	2023-12-6 18:20:49