【例7.1】保留3位小数

Status	Submit By	Time	Memory	Language	Code	Submit At
AC	Zzzzsd	5ms	764 KiB	C++14	129 Bytes	2025-8-6 13:07:23
AC	严梓瑄	5ms	760 KiB	C++14(O2)	152 Bytes	2025-8-6 16:28:39
AC	Harry	6ms	504 KiB	C++14	139 Bytes	2025-7-24 17:16:27
AC	刘宇皓2026dly	6ms	516 KiB	C++14(O2)	135 Bytes	2026-1-25 9:19:47
AC	黄琨淇	6ms	768 KiB	C++14(O2)	135 Bytes	2026-2-9 17:02:08
AC	胡知鱼	6ms	764 KiB	C++14(O2)	125 Bytes	2025-9-19 20:46:56
AC	李沐一	6ms	512 KiB	C++14(O2)	135 Bytes	2026-1-29 15:31:09
AC	周天心qcx	7ms	504 KiB	C++14(O2)	132 Bytes	2025-7-8 8:57:43
AC	戴俊懿2026dly	7ms	512 KiB	C++14(O2)	129 Bytes	2026-1-23 11:03:11
AC	左竣榕2026dly	7ms	512 KiB	C++14(O2)	146 Bytes	2026-1-23 20:36:48
AC	Oxygen	7ms	504 KiB	C++14	190 Bytes	2025-5-27 18:26:17
AC	米秋宇2026dly	7ms	516 KiB	C++14(O2)	134 Bytes	2026-3-12 19:19:08
AC	李沐一qcx	7ms	508 KiB	C++14(O2)	146 Bytes	2025-7-8 8:57:41
AC	张耀吉	7ms	768 KiB	C++14(O2)	127 Bytes	2026-2-3 15:53:50
AC	李穆萨1.04	7ms	504 KiB	C++14(O2)	113 Bytes	2025-7-9 15:31:21
AC	刘喻蔓	7ms	504 KiB	C++14(O2)	142 Bytes	2025-7-4 10:31:36
AC	沈若凡2026dly	7ms	512 KiB	C++14(O2)	134 Bytes	2026-1-23 9:31:46
AC	代轩语2026dly	7ms	512 KiB	C++14(O2)	135 Bytes	2026-2-1 17:17:00
AC	姚辰x1y2025	7ms	504 KiB	C++14(O2)	134 Bytes	2025-7-4 10:46:02
AC	沈天宇2026dly	7ms	512 KiB	C++14(O2)	135 Bytes	2026-1-17 21:34:29
AC	maochengjun	7ms	504 KiB	C++14	141 Bytes	2025-7-9 15:39:03
AC	李朋飞2026dly	7ms	512 KiB	C++14(O2)	151 Bytes	2026-1-17 16:29:04
AC	王思懿	7ms	760 KiB	C++14(O2)	144 Bytes	2025-7-4 9:53:24
AC	李承兴2026dly	7ms	512 KiB	C++14(O2)	113 Bytes	2026-1-22 10:37:52
AC	肖毅坤2026dly	7ms	512 KiB	C++14(O2)	148 Bytes	2026-1-25 17:08:21
AC	李宇翔2026dly	7ms	512 KiB	C++14(O2)	135 Bytes	2026-1-12 19:19:12
AC	殷骏杰2026dly	7ms	512 KiB	C++14(O2)	137 Bytes	2026-1-21 21:21:43
AC	余梓铭2026dly	7ms	512 KiB	C++14(O2)	133 Bytes	2026-1-11 18:20:18
AC	徐诗涵2026dly	7ms	512 KiB	C++14(O2)	152 Bytes	2026-1-18 14:34:53
AC	杨孟庄2026dly	7ms	512 KiB	C++14(O2)	151 Bytes	2026-1-24 16:07:27
AC	高尚美2026dly	7ms	512 KiB	C++14(O2)	194 Bytes	2026-1-23 20:25:17
AC	张叶朵	7ms	572 KiB	C++14(O2)	126 Bytes	2026-1-25 16:26:02
AC	刘佳汐2026dly	7ms	492 KiB	C++14(O2)	142 Bytes	2026-1-17 15:42:14
AC	Musa721	7ms	560 KiB	C++14(O2)	235 Bytes	2025-10-19 10:08:05
AC	陈珑予xly2025	7ms	548 KiB	C++14(O2)	119 Bytes	2025-7-4 9:32:52
AC	罗川皓xly2025	7ms	508 KiB	C++14(O2)	142 Bytes	2025-7-4 11:16:24
AC	米若瑜2026dly	7ms	512 KiB	C++14(O2)	143 Bytes	2026-1-21 19:35:38
AC	李俊诚	7ms	504 KiB	C++14(O2)	123 Bytes	2025-7-17 10:35:06
AC	白力予	7ms	504 KiB	C++14(O2)	145 Bytes	2025-7-4 11:07:53
AC	林语涵	7ms	504 KiB	C++14(O2)	135 Bytes	2025-8-8 11:08:48
AC	马誉纯	7ms	504 KiB	C++14(O2)	177 Bytes	2025-7-5 13:23:35
AC	赵婧文2026dly	7ms	596 KiB	C++14(O2)	136 Bytes	2026-1-17 10:15:24
AC	钟执墨2026dly	8ms	512 KiB	C++14(O2)	136 Bytes	2026-1-11 18:11:18
AC	李松清2026dly	8ms	512 KiB	C++14(O2)	144 Bytes	2026-1-22 13:30:01
AC	_anguanie_	8ms	508 KiB	C++14(O2)	150 Bytes	2025-7-4 9:20:33
AC	张霖桐	8ms	508 KiB	C++14(O2)	152 Bytes	2025-7-9 19:48:55
AC	丁资凡1.04	8ms	760 KiB	C++14(O2)	114 Bytes	2026-1-4 10:31:46
AC	杜思熠2026dly	8ms	512 KiB	C++14(O2)	136 Bytes	2026-1-23 14:22:20
AC	邵馨羽2026dly	8ms	512 KiB	C++14(O2)	135 Bytes	2026-1-23 20:21:32
AC	杨泫钦2026dly	8ms	768 KiB	C++14(O2)	162 Bytes	2026-1-22 21:27:54
AC	马康智xly2025	8ms	592 KiB	C++14(O2)	123 Bytes	2025-8-8 16:45:37
AC	刘锦洁2026dly	8ms	512 KiB	C++14(O2)	135 Bytes	2026-1-21 19:05:59
AC	饶子和2026dly	8ms	512 KiB	C++14(O2)	137 Bytes	2026-1-22 12:05:00
AC	ZYJing2012	8ms	760 KiB	C++14(O2)	146 Bytes	2025-7-4 10:40:28
AC	杨一诺2026dly	8ms	544 KiB	C++14(O2)	167 Bytes	2026-1-25 9:45:29
AC	罗安彤2026dly	8ms	512 KiB	C++14(O2)	156 Bytes	2026-1-25 13:54:05
AC	yh2025	8ms	504 KiB	C++14(O2)	149 Bytes	2025-7-25 11:38:58
AC	李铭禹2026dly	8ms	516 KiB	C++14(O2)	133 Bytes	2026-1-22 8:52:34
AC	王熙尧2026dly	8ms	512 KiB	C++14(O2)	140 Bytes	2026-1-25 13:22:35
AC	彭子尧2026dly	8ms	512 KiB	C++14(O2)	141 Bytes	2026-1-25 21:42:20
AC	Mr_Wr	8ms	528 KiB	C++14(O2)	141 Bytes	2025-7-4 9:32:48
AC	黄佳欣2026dly	8ms	512 KiB	C++14(O2)	245 Bytes	2026-1-24 13:39:52
AC	刘胤羽2026dly	8ms	512 KiB	C++14(O2)	158 Bytes	2026-1-24 12:13:00
AC	吴雨曦2026dly	8ms	512 KiB	C++14(O2)	128 Bytes	2026-1-11 15:11:46
AC	李铭凯2026dly	8ms	512 KiB	C++14(O2)	105 Bytes	2026-1-14 18:38:55
AC	李理2026dly	8ms	512 KiB	C++14(O2)	123 Bytes	2026-1-25 12:42:25
AC	文睿辰2026dly	8ms	512 KiB	C++14(O2)	170 Bytes	2026-1-17 22:10:08
AC	徐尔蔓qcx	8ms	508 KiB	C++14(O2)	150 Bytes	2025-7-8 8:52:05
AC	穆政辰2026dly	8ms	512 KiB	C++14(O2)	139 Bytes	2026-1-24 23:50:17
AC	汤骐嘉2026dly	8ms	512 KiB	C++14(O2)	136 Bytes	2026-1-11 17:29:25
AC	马泽宇2026dly	8ms	512 KiB	C++14(O2)	138 Bytes	2026-2-1 16:26:24
AC	钱颢文2026dly	8ms	512 KiB	C++14(O2)	157 Bytes	2026-1-22 21:40:46
AC	jinxijun	8ms	504 KiB	C++14	139 Bytes	2025-7-27 14:41:43
AC	李雨滴2026dly	8ms	516 KiB	C++14(O2)	135 Bytes	2026-1-22 10:29:22
AC	刘小琳	8ms	508 KiB	C++14	118 Bytes	2025-7-5 10:02:18
AC	李玉涵2026dly	8ms	512 KiB	C++14(O2)	136 Bytes	2026-1-14 20:36:38
AC	向奕锦1.04	8ms	512 KiB	C++14(O2)	134 Bytes	2026-1-23 9:28:00
AC	刀云皓2026dly	8ms	512 KiB	C++14(O2)	156 Bytes	2026-1-24 10:00:58
AC	万千绮2026dly	8ms	516 KiB	C++14(O2)	135 Bytes	2026-1-23 17:36:40
AC	叶梓希2026dly	8ms	512 KiB	C++14(O2)	126 Bytes	2026-1-15 20:17:37
AC	唐源懋2026dly	8ms	512 KiB	C++14(O2)	160 Bytes	2026-1-23 17:05:54
AC	王浩源2026dly	8ms	512 KiB	C++14(O2)	180 Bytes	2026-1-14 19:14:37
AC	孔令宇2026dly	8ms	512 KiB	C++14(O2)	142 Bytes	2026-1-18 19:58:04
AC	卢皓禹xly2025	8ms	512 KiB	C++17(O2)	168 Bytes	2026-1-15 15:00:43
AC	朱璟堂2026dly	8ms	512 KiB	C++14(O2)	195 Bytes	2026-1-14 22:21:40
AC	马语墨2026dly	8ms	512 KiB	C++14(O2)	134 Bytes	2026-1-24 13:15:35
AC	黄厚铭2026dly	8ms	512 KiB	C++14	147 Bytes	2026-1-11 18:15:53
AC	蔡建宇2026dly	8ms	512 KiB	C++14(O2)	154 Bytes	2026-1-22 17:16:52
AC	王启泽2026dly	8ms	512 KiB	C++14(O2)	123 Bytes	2026-1-18 18:23:18
AC	周宝熠xly2025	8ms	504 KiB	C++14(O2)	138 Bytes	2025-7-4 10:11:10
AC	肖阳2026dly	8ms	512 KiB	C++14(O2)	134 Bytes	2026-1-14 20:15:12
AC	许家畅xly2025	8ms	760 KiB	C++14(O2)	147 Bytes	2025-7-4 11:06:12
AC	杨高2026dly	8ms	516 KiB	C++14(O2)	152 Bytes	2026-1-22 20:04:01
AC	李欣蔚2026dly	8ms	512 KiB	C++14(O2)	154 Bytes	2026-1-23 11:46:06
AC	pcx...	8ms	508 KiB	C++14	132 Bytes	2025-7-24 14:53:51
AC	黄昭明xly2025	8ms	504 KiB	C++14(O2)	146 Bytes	2025-7-7 18:51:51
AC	zzx	8ms	760 KiB	C++14	145 Bytes	2025-7-22 18:38:09
AC	宋楷涵2026dly	8ms	512 KiB	C++14(O2)	143 Bytes	2026-1-21 21:20:26
AC	chenqiugu	8ms	536 KiB	C++14	179 Bytes	2025-7-17 19:13:23
AC	马天佑2026dly	8ms	516 KiB	C++14(O2)	136 Bytes	2026-1-22 21:49:18