【入门】求绝对值

Status	Submit By	Time	Memory	Language	Code	Submit At
AC	邓婷婷	1ms	380 KiB		140 Bytes	2022-1-9 15:56:50
AC	oyf	1ms	396 KiB		209 Bytes	2022-1-5 22:37:28
AC	让我睡觉	2ms	376 KiB		250 Bytes	2022-1-9 19:02:19
AC	小熊	14ms	3.4 MiB	Python 3	29 Bytes	2023-3-31 22:30:32
AC	xuan liyu	74ms	11 MiB	Java	231 Bytes	2022-8-31 18:22:46