输出保留 12 位小数的浮点数

Status	Submit By	Time	Memory	Code	Submit At
AC	summer23041	31ms	808 KiB	133 Bytes	2023-10-5 16:15:49
AC	BC20260028	31ms	812 KiB	171 Bytes	2023-11-24 16:30:37
AC	BC20260311	31ms	808 KiB	194 Bytes	2023-12-19 16:45:39
AC	BC20260349	31ms	808 KiB	119 Bytes	2023-10-20 22:22:52
AC	CC20260191	31ms	808 KiB	133 Bytes	2023-10-6 11:53:38
AC	CC20260060	31ms	732 KiB	120 Bytes	2023-11-12 8:09:41
AC	C20250069	32ms	768 KiB	179 Bytes	2023-10-15 12:39:07
AC	BC20260085	32ms	820 KiB	119 Bytes	2023-11-24 17:07:28
AC	BC20260023	32ms	728 KiB	109 Bytes	2023-12-5 15:17:31
AC	BC20270022	38ms	696 KiB	116 Bytes	2025-4-19 20:24:54
AC	chenyu2024	39ms	816 KiB	163 Bytes	2024-9-27 10:14:00
AC	BC20270025	39ms	732 KiB	151 Bytes	2025-1-12 18:51:22
AC	C20250070	40ms	804 KiB	139 Bytes	2024-5-18 11:19:39
AC	hfoj1224a	40ms	812 KiB	151 Bytes	2025-1-2 16:52:59
AC	BC20260030	41ms	808 KiB	118 Bytes	2024-4-11 19:53:28
AC	BC20260080	41ms	852 KiB	141 Bytes	2024-4-3 23:52:29
AC	BC20260087	41ms	808 KiB	120 Bytes	2024-4-8 15:20:07
AC	BC20260002	43ms	764 KiB	194 Bytes	2024-5-13 12:14:31
AC	BC20260087	44ms	804 KiB	120 Bytes	2024-4-8 15:19:54