【例7.1】保留3位小数

Status	Submit By	Time	Memory	Language	Code	Submit At
AC	Weiyi_Hobe	4ms	256 KiB	C	102 Bytes	2025-4-14 20:22:03
AC	王越	4ms	256 KiB	C	89 Bytes	2025-4-16 19:41:25
AC	陈浩彬	4ms	320 KiB	C	101 Bytes	2024-10-6 20:01:41
AC	郑式	4ms	552 KiB	C	117 Bytes	2024-9-24 19:25:37
AC	石雅妮	4ms	548 KiB	C	103 Bytes	2024-10-17 17:07:36
AC	3149991033	4ms	324 KiB	C	101 Bytes	2024-10-24 19:27:14
AC	AAA懒大王	5ms	324 KiB	C	100 Bytes	2024-10-20 17:02:13
AC	二硫碘化钾	102ms	3.8 MiB	Python 3	36 Bytes	2024-10-23 15:47:52