日期格式化

Status	Submit By	Time	Memory	Language	Code	Submit At
AC	lionsong	1ms	260 KiB	C	315 Bytes	2021-12-15 11:37:43
AC	白月光	1ms	284 KiB	C	199 Bytes	2021-12-28 17:40:46
AC	xlw	1ms	300 KiB	C	262 Bytes	2021-12-26 19:24:37
AC	Elva	1ms	260 KiB	C	123 Bytes	2021-12-31 19:12:13
AC	邓婷婷	1ms	260 KiB	C	284 Bytes	2021-12-15 18:06:22
AC	huyang	2ms	296 KiB		168 Bytes	2021-12-30 17:03:13
AC	swpumarshal	3ms	376 KiB		168 Bytes	2021-12-27 21:38:50
AC	kirk	3ms	388 KiB		196 Bytes	2021-12-15 10:02:29
AC	Aloot	3ms	404 KiB		315 Bytes	2021-12-24 19:39:23
AC	让我睡觉	3ms	376 KiB		376 Bytes	2021-12-15 21:29:28
AC	oyf	3ms	360 KiB		237 Bytes	2021-12-22 21:25:54
AC	Janey	3ms	376 KiB		237 Bytes	2021-12-23 20:33:34
AC	zhaoyu	4ms	376 KiB		155 Bytes	2022-3-22 23:01:05