【例7.1】保留3位小数

Status	Submit By	Time	Memory	Language	Code	Submit At
AC	简怀墨2025xlycontest	8ms	512 KiB	C++14(O2)	137 Bytes	2026-1-15 14:36:25
AC	张志杰2026dly	8ms	512 KiB	C++14(O2)	114 Bytes	2026-1-11 18:37:23
AC	yzh1217	8ms	536 KiB	C++14(O2)	133 Bytes	2024-8-13 15:42:20
AC	金熙芸2026dly	8ms	516 KiB	C++14(O2)	135 Bytes	2026-1-24 17:25:34
AC	韩森同2026dly	8ms	512 KiB	C++14(O2)	160 Bytes	2026-1-16 19:11:19
AC	杨锦莲xly2025	8ms	532 KiB	C++14(O2)	146 Bytes	2025-7-4 13:54:23
AC	何庭杨xly2025	8ms	760 KiB	C++14(O2)	138 Bytes	2025-7-4 10:23:33
AC	xzh13579	8ms	508 KiB	C++14(O2)	144 Bytes	2025-7-4 11:06:53
AC	张纯逸2026dly	8ms	512 KiB	C++14(O2)	142 Bytes	2026-1-17 13:07:38
AC	简怀墨xly2025	8ms	508 KiB	C++14(O2)	138 Bytes	2025-7-4 11:06:50
AC	钟辛2026dly	8ms	520 KiB	C++14(O2)	134 Bytes	2026-1-22 21:32:01
AC	吴承锦2026dly	8ms	516 KiB	C++14(O2)	144 Bytes	2026-1-24 10:41:08
AC	黄厚铭1.04	8ms	756 KiB	C++14(O2)	113 Bytes	2025-12-31 22:42:16
AC	李安冉2026dly	8ms	512 KiB	C++14(O2)	146 Bytes	2026-1-22 15:42:30
AC	冷和骏2026dly	8ms	524 KiB	C++14(O2)	159 Bytes	2026-1-13 21:31:28
AC	丁资凡2026dly	8ms	512 KiB	C++14(O2)	115 Bytes	2026-1-11 19:28:22
AC	李锦华	8ms	504 KiB	C++14(O2)	146 Bytes	2025-7-24 19:40:32
AC	孟致远2026dly	8ms	512 KiB	C++14(O2)	158 Bytes	2026-1-15 19:32:02
AC	谭皓骞xly2025	8ms	508 KiB	C++14(O2)	144 Bytes	2025-7-5 8:56:06
AC	高梓宸2026dly	8ms	512 KiB	C++14(O2)	173 Bytes	2026-1-23 22:11:32
AC	刘熠辰	8ms	512 KiB	C++14(O2)	124 Bytes	2026-1-15 14:39:01
AC	郭震宇2026dly	8ms	772 KiB	C++14(O2)	141 Bytes	2026-1-23 22:04:58
AC	王誉诚2026dly	8ms	508 KiB	C++14(O2)	137 Bytes	2026-1-16 20:36:06
AC	李雨诺129xly2025	8ms	504 KiB	C++14(O2)	7.7 KiB	2025-7-4 11:06:51
AC	方雪岚2026dly	8ms	512 KiB	C++14(O2)	136 Bytes	2026-1-21 17:44:15
AC	王鸿畅xly2025	8ms	504 KiB	C++14(O2)	146 Bytes	2025-7-4 10:52:01
AC	刘湶馨2026dly	8ms	516 KiB	C++14(O2)	162 Bytes	2026-1-19 23:25:08
AC	李奕麒2026dly	8ms	512 KiB	C++14(O2)	127 Bytes	2026-1-24 20:10:32
AC	丁艺萍2026dly	8ms	512 KiB	C++14(O2)	146 Bytes	2026-1-22 21:46:56
AC	陈文浩2026dly	8ms	512 KiB	C++14(O2)	131 Bytes	2026-1-23 19:58:16
AC	zzy15924600533	8ms	504 KiB	C++14(O2)	143 Bytes	2025-7-22 21:00:11
AC	张清果2026dly	8ms	512 KiB	C++14(O2)	144 Bytes	2026-1-22 9:56:20
AC	陆昊宇	8ms	496 KiB	C++14(O2)	163 Bytes	2025-7-9 19:29:35
AC	祝语梵2026dly	8ms	512 KiB	C++14(O2)	163 Bytes	2026-1-17 20:08:29
AC	杨家齐xly2025	8ms	512 KiB	C++17(O2)	227 Bytes	2026-1-14 22:27:59
AC	刘耘滕2026dly	8ms	512 KiB	C++14(O2)	156 Bytes	2026-1-25 18:46:22
AC	周天心2026dly	8ms	512 KiB	C++14(O2)	135 Bytes	2026-1-22 21:10:39
AC	赵靓2026dly	8ms	768 KiB	C++14(O2)	154 Bytes	2026-1-25 19:40:35
AC	邵馨羽qcx	8ms	508 KiB	C++14(O2)	146 Bytes	2025-7-8 8:56:35
AC	肖钰曦	8ms	768 KiB	C++14(O2)	142 Bytes	2025-8-7 21:00:42
AC	周皓冉	8ms	512 KiB	C++14(O2)	115 Bytes	2026-2-3 15:49:17
AC	王冠楠xly2025	8ms	504 KiB	C++14(O2)	129 Bytes	2025-7-4 9:56:30
AC	李承兴	8ms	508 KiB	C++14(O2)	123 Bytes	2025-7-5 10:09:15
AC	杨晨希xly2025	8ms	504 KiB	C++14(O2)	142 Bytes	2025-7-4 11:09:30
AC	黄腾钰2026dly	8ms	512 KiB	C++14(O2)	123 Bytes	2026-1-11 21:22:00
AC	王程民2026dly	8ms	512 KiB	C++14(O2)	129 Bytes	2026-1-23 13:44:59
AC	马岩2026dly	8ms	512 KiB	C++14(O2)	165 Bytes	2026-1-22 22:57:43
AC	周若萱2026dly	8ms	512 KiB	C++14(O2)	120 Bytes	2026-1-23 19:18:58
AC	刘原铮2026dly	8ms	512 KiB	C++14(O2)	134 Bytes	2026-1-11 17:29:11
AC	包恒韶2026dly	8ms	512 KiB	C++14(O2)	137 Bytes	2026-2-1 16:39:49
AC	张芷若xly2025	8ms	512 KiB	C++14	135 Bytes	2026-1-15 14:33:12
AC	余可馨2026dly	8ms	512 KiB	C++14(O2)	115 Bytes	2026-1-11 23:17:51
AC	程俊皓1.04	8ms	512 KiB	C++14(O2)	114 Bytes	2026-1-11 15:54:58
AC	彭丞尧2026dly	8ms	512 KiB	C++14(O2)	131 Bytes	2026-1-25 9:12:57
AC	杨珂曦	8ms	504 KiB	C++14(O2)	141 Bytes	2025-9-26 14:32:50
AC	夏欣辰2026dly	8ms	512 KiB	C++14(O2)	137 Bytes	2026-1-18 11:40:50
AC	后程兮qcx	8ms	504 KiB	C++14(O2)	166 Bytes	2025-7-8 15:28:54
AC	王芊朗2026dly	8ms	768 KiB	C++14(O2)	144 Bytes	2026-1-22 23:30:52
AC	严梓绮2026dly	8ms	512 KiB	C++14(O2)	130 Bytes	2026-1-22 11:02:12
AC	Lyd1107	8ms	508 KiB	C++14	192 Bytes	2025-7-22 18:04:35
AC	王一2026dly	8ms	512 KiB	C++14(O2)	97 Bytes	2026-1-11 19:46:58
AC	马梓桐2026dly	8ms	512 KiB	C++14(O2)	130 Bytes	2026-1-25 16:14:33
AC	许默xly2025	8ms	504 KiB	C++14(O2)	142 Bytes	2025-7-4 10:45:43
AC	王梓龙2026dly	9ms	512 KiB	C++14(O2)	146 Bytes	2026-1-23 15:36:05
AC	王芃晨2026dly	9ms	512 KiB	C++14(O2)	109 Bytes	2026-1-11 20:18:12
AC	陆弘羲承2026dly	9ms	768 KiB	C++14(O2)	143 Bytes	2026-1-22 9:39:20
AC	何子琛2026dly	9ms	512 KiB	C++14(O2)	121 Bytes	2026-1-16 21:46:53
AC	孙道庸2026dly	9ms	512 KiB	C++14(O2)	142 Bytes	2026-1-23 13:25:37
AC	卢子轩2026dly	9ms	512 KiB	C++14(O2)	149 Bytes	2026-1-14 13:13:30
AC	汤智钧2026dly	9ms	516 KiB	C++14(O2)	134 Bytes	2026-1-25 16:03:43
AC	王弘羿2026dly	9ms	512 KiB	C++14(O2)	124 Bytes	2026-1-11 18:58:57
AC	王承毅2026dly	9ms	768 KiB	C++14(O2)	158 Bytes	2026-1-24 16:31:15
AC	欧阳宇宸2026dly	9ms	512 KiB	C++14(O2)	191 Bytes	2026-1-11 21:57:14
AC	侬孜翌2026dly	9ms	512 KiB	C++14(O2)	140 Bytes	2026-1-11 18:01:50
AC	何嘉桐2026dly	9ms	512 KiB	C++14(O2)	134 Bytes	2026-1-25 19:58:34
AC	王昱尊xly2025	9ms	760 KiB	C++14(O2)	138 Bytes	2025-7-24 21:44:51
AC	祝语墨2026dly	9ms	512 KiB	C++14(O2)	113 Bytes	2026-1-18 10:10:47
AC	sage2012	9ms	536 KiB	C++14(O2)	119 Bytes	2025-9-21 22:55:11
AC	钟雨辰xly2025	9ms	504 KiB	C++14(O2)	134 Bytes	2025-7-4 9:59:37
AC	施振瑜2026dly	9ms	772 KiB	C++14(O2)	135 Bytes	2026-1-25 0:02:59
AC	王研钧2026dly	9ms	512 KiB	C++14(O2)	125 Bytes	2026-1-24 15:56:38
AC	王梓汀	9ms	512 KiB	C++14(O2)	117 Bytes	2026-1-13 21:22:34
AC	w20120404	9ms	504 KiB	C++14(O2)	141 Bytes	2025-7-28 2:05:27
AC	罗子嫣2026dly	9ms	512 KiB	C++14(O2)	122 Bytes	2026-1-14 22:25:58
AC	罗宸邈2026dly	9ms	512 KiB	C++14(O2)	248 Bytes	2026-1-25 9:08:03
AC	冯俊诚	9ms	504 KiB	C++14(O2)	122 Bytes	2025-8-18 16:22:25
AC	唐文博2026dly	9ms	516 KiB	C++14(O2)	145 Bytes	2026-1-21 15:41:45
AC	邓旭尧2026dly	9ms	512 KiB	C++14(O2)	142 Bytes	2026-1-22 16:26:56
AC	hmtzl666	9ms	504 KiB	C++14(O2)	143 Bytes	2025-7-4 10:05:59
AC	李依霏2026dly	9ms	512 KiB	C++14(O2)	142 Bytes	2026-1-24 13:52:17
AC	shtian	9ms	764 KiB	C++98	132 Bytes	2024-7-11 12:59:56
AC	李衍树xly2025	9ms	508 KiB	C++14(O2)	137 Bytes	2025-7-4 11:04:23
AC	李轩逸xly2025	9ms	504 KiB	C++14(O2)	136 Bytes	2025-7-4 10:24:10
AC	杨轩2026dly	9ms	512 KiB	C++14(O2)	164 Bytes	2026-1-23 15:19:11
AC	郭恒宇2026dly	9ms	512 KiB	C++14(O2)	156 Bytes	2026-1-23 23:55:56
AC	刘宥杋2026dly	9ms	512 KiB	C++14(O2)	131 Bytes	2026-1-24 22:38:45
AC	牛犇2026dly	9ms	512 KiB	C++14(O2)	136 Bytes	2026-1-15 21:56:53
AC	string_dbr	9ms	508 KiB	C++14(O2)	117 Bytes	2025-5-26 14:47:11
AC	heqianyu	9ms	504 KiB	C++14	139 Bytes	2025-7-24 15:46:03
AC	_chjich_	9ms	764 KiB	C++14(O2)	142 Bytes	2024-8-13 12:49:08