【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	滕氏蓝	1ms	256 KiB	C	96 Bytes	2026-8-28 20:25:45
AC	18973114276	1ms	256 KiB	C	92 Bytes	2026-1-13 9:18:21
AC	18241579096	1ms	256 KiB	C	87 Bytes	2026-8-26 14:23:01
AC	DUFLstudent	1ms	288 KiB	C	110 Bytes	2026-8-26 17:13:42
AC	gggggggg	2ms	320 KiB	C++98	140 Bytes	2025-9-19 18:50:39
AC	喝汽水的懒蜘蛛	2ms	492 KiB	C++98	112 Bytes	2025-6-7 14:44:11
AC	? ? ?	2ms	512 KiB	C++14	111 Bytes	2026-5-30 14:46:45
AC	jintang	2ms	504 KiB	C++98	115 Bytes	2025-8-17 10:36:11
AC	华夏狐韵	2ms	512 KiB	C++98	112 Bytes	2026-3-27 14:43:17
AC	王小米su7	3ms	512 KiB	C++14	132 Bytes	2026-8-23 16:51:41
AC	李亚楠	3ms	512 KiB	C++98	108 Bytes	2026-8-9 17:10:59
AC	admin	3ms	508 KiB	C++98	118 Bytes	2025-6-28 19:17:54
AC	余淋琪	3ms	512 KiB	C++14	120 Bytes	2026-7-5 16:47:30
AC	毕盛钦	3ms	512 KiB	C++11	121 Bytes	2026-3-29 9:25:13
AC	殷业然	3ms	448 KiB	C++14	132 Bytes	2026-7-12 17:39:51
AC	cx111111	3ms	536 KiB	C++98	110 Bytes	2025-9-2 15:48:53
AC	zyf	3ms	536 KiB	C++98	121 Bytes	2025-9-2 15:50:01
AC	陈语檀	3ms	512 KiB	C++98	107 Bytes	2026-8-9 17:10:34
AC	凃洋	3ms	512 KiB	C++98	93 Bytes	2026-3-3 15:03:54
AC	W234A	3ms	520 KiB	C++98	118 Bytes	2026-6-12 20:39:24
AC	Syouman	3ms	512 KiB	C++98	83 Bytes	2026-8-24 20:22:06
AC	灰尘中的细菌	3ms	512 KiB	C++14	183 Bytes	2026-8-16 17:36:11
AC	rabbit	3ms	328 KiB	C++98	113 Bytes	2025-9-2 15:47:00
AC	霖霖	36ms	3.9 MiB	Python 3	30 Bytes	2026-1-24 16:02:14
AC	睡醒喝口茶女士	36ms	3.8 MiB	Python 3	30 Bytes	2025-11-20 19:59:14
AC	庭敬	36ms	4 MiB	Python 3	32 Bytes	2025-11-23 19:08:56
AC	小雨淅淅	37ms	3.8 MiB	Python 3	30 Bytes	2026-8-26 0:19:15
AC	张宇航	37ms	3.8 MiB	Python 3	30 Bytes	2025-11-18 14:00:08