【例7.1】保留3位小数

Status	Submit By	Time	Memory	Language	Code	Submit At
AC	符号 (347符艺涵)	113ms	3.9 MiB	Python 3	94 Bytes	2025-11-25 14:46:34
AC	初二352李昱璇	113ms	3.8 MiB	Python 3	39 Bytes	2025-10-16 15:45:34
AC	347班毛晨瑞	113ms	4.2 MiB	Python 3	36 Bytes	2025-12-30 14:33:38
AC	初二348郭润婷	114ms	3.8 MiB	Python 3	36 Bytes	2026-4-1 17:39:11
AC	初二352郑淇嘉	114ms	3.9 MiB	Python 3	38 Bytes	2025-10-21 15:38:44
AC	347史荟冉	155ms	4 MiB	Python 3	36 Bytes	2025-11-25 14:50:36