【例3.1】输出表达式的值

Status	Submit By	Time	Memory	Language	Code	Submit At
AC	zhouyixuan	2ms	764 KiB	C++11(O2)	103 Bytes	2024-12-21 17:50:35
AC	wangyizhuo	2ms	324 KiB	C++11(O2)	110 Bytes	2025-2-13 21:33:30
AC	wujiayi	3ms	536 KiB	C++11(O2)	101 Bytes	2024-12-21 11:18:55
AC	liuzhenhe	3ms	320 KiB	C++11(O2)	103 Bytes	2024-12-21 20:04:24
AC	wangjingyi	3ms	324 KiB	C++11(O2)	114 Bytes	2024-12-21 11:09:21
AC	wangbeichen	3ms	536 KiB	C++11(O2)	198 Bytes	2024-12-27 22:05:24
AC	gaoyuchen	3ms	536 KiB	C++11(O2)	113 Bytes	2024-12-21 12:20:45
AC	guoxinglin	3ms	324 KiB	C++11(O2)	106 Bytes	2025-1-18 19:34:30
AC	shuyihan	3ms	536 KiB	C++11(O2)	110 Bytes	2024-12-21 11:10:07
AC	admin	3ms	536 KiB	C++11(O2)	101 Bytes	2024-12-21 11:11:36
AC	songchengxiao	3ms	536 KiB	C++11(O2)	103 Bytes	2025-1-20 18:01:05