【例3.1】输出表达式的值

Status	Submit By	Time	Memory	Language	Code	Submit At
AC	蒋欣辰	3ms	512 KiB	C++14(O2)	161 Bytes	2026-2-28 10:58:32
AC	钟辛2026dly	3ms	496 KiB	C++14(O2)	105 Bytes	2025-12-28 20:53:04
AC	刘喻蔓	3ms	504 KiB	C++14(O2)	112 Bytes	2025-7-4 9:11:29
AC	李朋飞2026dly	3ms	504 KiB	C++14(O2)	113 Bytes	2025-12-29 17:03:08
AC	程俊皓1.04	3ms	508 KiB	C++14(O2)	107 Bytes	2025-12-28 14:53:49
AC	许默xly2025	3ms	504 KiB	C++14(O2)	112 Bytes	2025-7-4 9:31:26
AC	王昱尊xly2025	3ms	508 KiB	C++14(O2)	109 Bytes	2025-7-5 8:42:03
AC	许然车	3ms	512 KiB	C++14(O2)	119 Bytes	2025-8-17 9:34:53
AC	Oxygen	3ms	504 KiB	C++14	111 Bytes	2025-5-25 17:26:17
AC	刘诗瑶2026dly	3ms	504 KiB	C++14(O2)	107 Bytes	2026-1-2 11:23:35
AC	商竣杰2026dly	3ms	504 KiB	C++14(O2)	110 Bytes	2026-1-7 21:49:18
AC	胡淼2026dly	3ms	512 KiB	C++14(O2)	173 Bytes	2026-1-27 22:19:57
AC	吴承丞2026dly	3ms	504 KiB	C++14(O2)	112 Bytes	2026-1-2 11:17:19
AC	蔡建宇2026dly	3ms	504 KiB	C++14(O2)	101 Bytes	2025-12-28 16:00:06
AC	李松清2026dly	3ms	364 KiB	C++14(O2)	103 Bytes	2026-1-1 21:28:54
AC	杨洋2026dly	3ms	504 KiB	C++14(O2)	115 Bytes	2025-12-29 19:39:35
AC	李依霏2026dly	3ms	504 KiB	C++14(O2)	109 Bytes	2025-12-29 21:26:32
AC	冷和骏2026dly	3ms	504 KiB	C++14(O2)	145 Bytes	2025-12-30 22:52:12
AC	沈佳骏2026dly	3ms	504 KiB	C++14(O2)	107 Bytes	2025-12-28 15:28:33
AC	taoruiguo120	3ms	760 KiB	C++14	94 Bytes	2025-7-17 18:54:33
AC	李瑾然xly2025	3ms	760 KiB	C++17(O2)	114 Bytes	2025-7-4 9:40:17
AC	夏欣辰2026dly	3ms	504 KiB	C++14(O2)	106 Bytes	2026-1-3 17:37:39
AC	邓旭尧2026dly	3ms	508 KiB	C++14(O2)	122 Bytes	2026-1-3 12:05:29
AC	祝语墨2026dly	3ms	508 KiB	C++14(O2)	107 Bytes	2025-12-29 22:05:32
AC	杨苏灿	3ms	508 KiB	C++14(O2)	100 Bytes	2025-8-7 19:02:34
AC	yzh1217	3ms	320 KiB	C++14(O2)	112 Bytes	2024-8-13 16:18:07
AC	杜思熠2026dly	3ms	504 KiB	C++14(O2)	114 Bytes	2026-1-2 21:26:37
AC	wangmingxuan	3ms	324 KiB	C++14(O2)	108 Bytes	2024-8-7 15:22:29
AC	李鸿瑞	3ms	484 KiB	C++14(O2)	109 Bytes	2025-8-16 20:32:34
AC	许家畅xly2025	3ms	504 KiB	C++14(O2)	117 Bytes	2025-7-4 9:32:59
AC	李理2026dly	3ms	504 KiB	C++14(O2)	136 Bytes	2025-12-28 19:42:09
AC	曹磊	3ms	504 KiB	C++14	114 Bytes	2025-5-26 14:33:16
AC	陈泓任2026dly	3ms	760 KiB	C++14(O2)	106 Bytes	2025-12-28 23:20:11
AC	梁照晨2026dly	3ms	528 KiB	C++14(O2)	101 Bytes	2025-12-30 21:47:50
AC	邵馨羽qcx	3ms	504 KiB	C++14(O2)	112 Bytes	2025-7-7 9:29:19
AC	白力予1	3ms	504 KiB	C++14(O2)	119 Bytes	2025-10-19 10:42:23
AC	向奕锦1.04	3ms	504 KiB	C++14(O2)	106 Bytes	2026-1-4 19:45:02
AC	刘熠辰	3ms	512 KiB	C++14(O2)	106 Bytes	2026-1-15 14:13:01
AC	杨孟庄2026dly	3ms	504 KiB	C++14(O2)	114 Bytes	2026-1-3 21:19:51
AC	李政宸2026dly	3ms	504 KiB	C++14(O2)	164 Bytes	2025-12-29 22:16:14
AC	缪欣然xly2025	3ms	488 KiB	C++14(O2)	115 Bytes	2025-7-4 9:53:35
AC	王子尧2026dly	3ms	512 KiB	C++14(O2)	114 Bytes	2026-1-22 19:36:28
AC	陆弘羲承2026dly	3ms	504 KiB	C++14(O2)	114 Bytes	2026-1-3 10:34:30
AC	史子友	3ms	504 KiB	C++14(O2)	238 Bytes	2025-10-19 16:39:44
AC	王冠楠xly2025	3ms	760 KiB	C++14(O2)	120 Bytes	2025-7-4 9:10:40
AC	黄盼希2026dly	3ms	760 KiB	C++14(O2)	110 Bytes	2026-1-5 21:49:12
AC	李科良2026dly	3ms	512 KiB	C++14(O2)	115 Bytes	2026-2-1 16:36:42
AC	陆昊宇	3ms	504 KiB	C++14(O2)	116 Bytes	2025-7-7 14:00:52
AC	黄昭明xly2025	3ms	504 KiB	C++14(O2)	108 Bytes	2025-7-7 8:25:11
AC	乃隆	3ms	536 KiB	C++14(O2)	111 Bytes	2025-9-12 16:04:58
AC	穆政辰2026dly	3ms	504 KiB	C++14(O2)	125 Bytes	2026-1-3 21:51:16
AC	张舒扬2026dly	3ms	488 KiB	C++14(O2)	105 Bytes	2026-1-2 11:06:02
AC	heqianyu	3ms	324 KiB	C++14(O2)	149 Bytes	2024-7-20 15:54:21
AC	BRO	3ms	768 KiB	C++98	115 Bytes	2024-7-8 23:17:27
AC	刘小琳	3ms	760 KiB	C++14	107 Bytes	2025-7-5 9:45:28
AC	朱梓恒2026dly	3ms	504 KiB	C++14(O2)	129 Bytes	2025-12-29 13:36:15