输出保留 12 位小数的浮点数

Status	Submit By	Time	Memory	Language	Code	Submit At
AC	Harry	32ms	808 KiB	C++14	177 Bytes	2025-8-18 18:50:33
AC	严晨航	32ms	808 KiB	C++14(O2)	143 Bytes	2025-8-26 15:56:04
AC	张叶朵	32ms	816 KiB	C++14(O2)	162 Bytes	2025-8-27 23:11:00
AC	刘喻蔓	32ms	804 KiB	C++14(O2)	143 Bytes	2025-12-4 15:33:14
AC	杨家齐xly2025	32ms	728 KiB	C++14(O2)	135 Bytes	2025-8-7 19:39:29
AC	谭博文	33ms	696 KiB	C++14(O2)	136 Bytes	2025-10-7 14:19:40
AC	maochengjun	34ms	808 KiB	C++14	143 Bytes	2025-7-9 11:38:25
AC	龙肖瑾xly2025	34ms	728 KiB	C++14(O2)	143 Bytes	2025-7-27 22:03:47
AC	杨茗涵2026dly	34ms	760 KiB	C++14(O2)	135 Bytes	2026-2-22 10:59:48
AC	若白	35ms	816 KiB	C++17(O2)	124 Bytes	2025-7-11 14:38:46
AC	sage2012	35ms	808 KiB	C++14(O2)	127 Bytes	2025-9-20 17:17:09
AC	王思懿	35ms	812 KiB	C++14(O2)	145 Bytes	2025-8-18 10:52:34
AC	女乃龙	35ms	824 KiB	C++14(O2)	143 Bytes	2025-7-11 14:41:55
AC	简怀墨2025xlycontest	35ms	808 KiB	C++14(O2)	150 Bytes	2026-1-6 10:10:35
AC	w20120404	36ms	688 KiB	C++14(O2)	139 Bytes	2025-8-19 15:14:45
AC	陈国瑞	36ms	808 KiB	C++14(O2)	157 Bytes	2025-7-15 17:18:47
AC	卢皓禹xly2025	36ms	808 KiB	C++14(O2)	153 Bytes	2025-9-6 16:10:41
AC	lyd	37ms	808 KiB	C++14(O2)	142 Bytes	2025-9-25 17:13:56
AC	班振浩	37ms	808 KiB	C++14(O2)	152 Bytes	2025-10-21 10:19:13
AC	李蕲航	37ms	876 KiB	C++14(O2)	122 Bytes	2026-2-26 16:30:15
AC	李衍树xly2025	38ms	808 KiB	C++14	135 Bytes	2026-1-1 9:10:05
AC	谷震轩	38ms	808 KiB	C++14(O2)	115 Bytes	2026-2-26 20:07:15
AC	刘邦坤	38ms	808 KiB	C++14(O2)	121 Bytes	2026-2-28 15:30:29
AC	_chjich_	39ms	732 KiB	C++14(O2)	124 Bytes	2025-7-11 9:31:56
AC	曾彦彬contest	39ms	804 KiB	C++14(O2)	167 Bytes	2025-7-7 19:41:37
AC	xzh13579	39ms	808 KiB	C++14(O2, GCC 9.3.0)	184 Bytes	2025-7-24 23:23:41
AC	hmtzl666	39ms	816 KiB	C++14(O2)	167 Bytes	2026-3-22 20:33:30
AC	黄也洛	39ms	852 KiB	C++14(O2)	134 Bytes	2026-2-1 15:07:09
AC	王熙尧2026dly	39ms	808 KiB	C++14(O2)	141 Bytes	2026-1-10 22:24:17
AC	饶子和2026dly	39ms	848 KiB	C++14(O2)	135 Bytes	2026-2-11 17:27:29
AC	孔令宇2026dly	39ms	812 KiB	C++14(O2)	135 Bytes	2026-3-29 8:43:34
AC	李铭凯2026dly	39ms	816 KiB	C++14(O2)	115 Bytes	2026-2-25 19:51:09
AC	蔡建宇2026dly	39ms	808 KiB	C++14(O2)	145 Bytes	2026-2-9 14:32:52
AC	zzy15924600533	40ms	812 KiB	C++14(O2)	246 Bytes	2026-2-27 14:05:11
AC	Musa721	40ms	808 KiB	C++14(O2)	348 Bytes	2026-1-8 17:34:44
AC	程俊皓1.04	40ms	808 KiB	C++14(O2)	117 Bytes	2026-1-18 9:36:09
AC	李承兴	40ms	812 KiB	C++14(O2)	116 Bytes	2026-2-28 17:05:29
AC	张隽语xly2025	40ms	808 KiB	C++14	116 Bytes	2026-1-10 9:19:20
AC	张芷若xly2025	40ms	856 KiB	C++14	135 Bytes	2026-1-8 17:27:29
AC	昂冠宇xly2025	40ms	816 KiB	C++14(O2)	140 Bytes	2026-3-22 20:48:45
AC	Mch121018	40ms	816 KiB	C++17(O2)	163 Bytes	2026-1-8 15:39:26
AC	蒋欣辰	40ms	816 KiB	C++14(O2)	127 Bytes	2026-2-24 19:25:03
AC	白力予1	40ms	852 KiB	C++14(O2)	136 Bytes	2026-1-8 17:26:21
AC	刘熠辰	40ms	808 KiB	C++14(O2)	124 Bytes	2025-9-25 15:25:30
AC	米秋宇2026dly	40ms	856 KiB	C++14(O2)	135 Bytes	2026-2-5 11:32:12
AC	侬孜翌2026dly	40ms	808 KiB	C++14(O2)	138 Bytes	2026-1-14 14:20:58
AC	商竣杰2026dly	40ms	808 KiB	C++14(O2)	168 Bytes	2026-1-30 15:32:14
AC	安致远2026dly	40ms	808 KiB	C++14(O2)	137 Bytes	2026-1-28 9:37:07
AC	余梓铭2026dly	40ms	852 KiB	C++14(O2)	105 Bytes	2026-1-28 17:26:09
AC	钟执墨2026dly	40ms	852 KiB	C++14(O2)	137 Bytes	2026-1-17 22:29:40
AC	趙婉婷2026dly	40ms	816 KiB	C++14(O2)	176 Bytes	2026-1-5 21:14:03