练7.4梯形面积

Status	Submit By	Time	Memory	Language	Code	Submit At
AC	黄昭明xly2025	3ms	504 KiB	C++14(O2)	127 Bytes	2025-7-6 9:44:40
AC	string_dbr	3ms	504 KiB	C++14(O2)	92 Bytes	2025-5-26 14:57:49
AC	Oxygen	3ms	504 KiB	C++14	92 Bytes	2025-5-29 14:20:59
AC	shtian	3ms	324 KiB	C++98	93 Bytes	2024-7-11 13:05:22