【例3.1】输出表达式的值

状态	递交者	时间	内存	语言	代码	递交时间
AC	xzy	3ms	512 KiB	C++14(O2)	115 Bytes	2026-2-10 8:45:24
AC	林桓伊	3ms	512 KiB	C++14(O2)	148 Bytes	2026-10-28 18:56:04
AC	郭昱辰	3ms	512 KiB	C++14(O2)	89 Bytes	2026-9-23 18:56:48
AC	唐梓峰	3ms	764 KiB	C++14(O2)	165 Bytes	2024-12-13 17:25:51
AC	JasonAC	3ms	536 KiB	C++14(O2)	108 Bytes	2025-1-23 15:34:32
AC	蒋应龙bill	3ms	324 KiB	C++17(O2)	102 Bytes	2024-12-14 16:48:42
AC	wangruochen	3ms	328 KiB	C++14(O2)	119 Bytes	2025-2-25 19:02:43
AC	lusiyu	3ms	536 KiB	C++14(O2)	114 Bytes	2025-2-21 16:32:50
AC	赵绎心	3ms	512 KiB	C++14(O2)	97 Bytes	2026-2-12 14:17:13
AC	yanhuancheng	3ms	512 KiB	C++14(O2)	93 Bytes	2026-2-10 15:01:10
AC	heyuqiao	3ms	536 KiB	C++14(O2)	103 Bytes	2025-9-17 17:43:36
AC	盛朝阳	3ms	324 KiB	C++14(O2)	108 Bytes	2025-9-25 12:18:22
AC	wangkezhen1	3ms	536 KiB	C++17(O2)	109 Bytes	2024-12-27 17:06:13
AC	胡原陌2(密码:123456)	3ms	760 KiB	C++14(O2)	94 Bytes	2025-12-1 12:49:45
AC	tfwsbxxb	3ms	512 KiB	C++14(O2)	109 Bytes	2026-8-1 12:47:20
AC	tfxuxinbo	3ms	512 KiB	C++14	219 Bytes	2026-7-31 12:19:38
AC	xietianze	3ms	320 KiB	C++14(O2)	128 Bytes	2025-2-21 16:46:22
AC	yuan man	3ms	512 KiB	C++14(O2)	112 Bytes	2026-2-25 9:28:54
AC	xujing	3ms	768 KiB	C++14(O2)	113 Bytes	2024-12-13 16:30:25
AC	蒋欣妤	3ms	536 KiB	C++14(O2)	146 Bytes	2024-12-13 16:32:52
AC	王琦睿	3ms	320 KiB	C++14(O2)	121 Bytes	2024-12-13 16:34:31
AC	yhxx(SU)	3ms	536 KiB	C++14(O2)	115 Bytes	2025-3-16 7:39:07
AC	薛传翰	3ms	540 KiB	C++14(O2)	112 Bytes	2026-2-25 9:29:52
AC	yyz	37ms	3.7 MiB	Python 3	30 Bytes	2026-2-8 13:26:21
AC	李彦鑫	37ms	3.8 MiB	Python 3	30 Bytes	2026-1-10 14:27:51