【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	gaga	3ms	512 KiB	C++11(O2)	114 Bytes	2026-2-7 20:27:03
AC	THR	3ms	452 KiB	C++11(O2)	113 Bytes	2026-3-15 17:30:13
AC	sunny20170121	3ms	508 KiB	C++11(O2)	122 Bytes	2026-2-8 14:38:26
AC	Bill	3ms	512 KiB	C++11(O2)	112 Bytes	2026-2-9 15:56:34
AC	hyx	3ms	512 KiB	C++11(O2)	122 Bytes	2026-3-8 13:57:22
AC	eric2017501	3ms	392 KiB	C++11(O2)	118 Bytes	2026-2-8 14:25:50
AC	zzh	3ms	512 KiB	C++11(O2)	122 Bytes	2026-2-16 15:46:05
AC	hdh	3ms	512 KiB	C++11(O2)	146 Bytes	2026-3-8 13:44:19
AC	leo	3ms	444 KiB	C++11(O2)	130 Bytes	2026-3-8 10:49:03
AC	ary	3ms	512 KiB	C++11(O2)	127 Bytes	2026-2-8 9:52:28