astype类型转换

Status	Submit By	Time	Memory	Language	Code	Submit At
AC	敏锐的松果5452	1725ms	35.4 MiB	Python 3	145 Bytes	2026-9-30 1:57:41
AC	淡定的歌手8816	1765ms	35.5 MiB	Python 3	151 Bytes	2026-10-1 18:13:21
AC	CHOSEN1	1768ms	35.2 MiB	Python 3	137 Bytes	2026-9-30 21:02:11
AC	踏实的奶茶2458	1774ms	35.3 MiB	Python 3	293 Bytes	2026-9-30 10:39:35
AC	Mazzer	1791ms	35.4 MiB	Python 3	145 Bytes	2026-10-1 21:40:00
AC	睿智的诗人9243	1797ms	35.3 MiB	Python 3	190 Bytes	2026-9-29 19:01:12
AC	TeKxAqtgiT	1804ms	35.4 MiB	Python 3	223 Bytes	2026-9-30 9:37:50
AC	慢吞吞的汤圆6210	1809ms	35.5 MiB	Python 3	118 Bytes	2026-9-30 17:22:14
AC	温和的诗人1642	1812ms	35.5 MiB	Python 3	140 Bytes	2026-9-30 21:56:46
AC	pKeTtJYNma	1816ms	35.3 MiB	Python 3	201 Bytes	2026-10-2 19:28:37
AC	敏锐的沙丘	1829ms	35.4 MiB	Python 3	331 Bytes	2026-9-30 22:58:56
AC	RjRx2ye8jr	1834ms	35.1 MiB	Python 3	246 Bytes	2026-9-30 20:51:57
AC	8MvpHvF5hl	1841ms	35.2 MiB	Python 3	221 Bytes	2026-9-30 15:12:59
AC	harkjeans	1842ms	35.3 MiB	Python 3	214 Bytes	2026-10-1 15:17:59
AC	Cowalnut	1848ms	35.6 MiB	Python 3	217 Bytes	2026-9-28 15:28:39
AC	甜美的桃子7984	1853ms	35.5 MiB	Python 3	123 Bytes	2026-9-30 16:41:56
AC	细心的栗子7874	1855ms	35.3 MiB	Python 3	134 Bytes	2026-9-30 14:01:03
AC	诚恳的面包	1856ms	35.4 MiB	Python 3	161 Bytes	2026-9-30 16:24:53
AC	TaZi	1876ms	35.4 MiB	Python 3	226 Bytes	2026-9-26 16:53:21
AC	lilychen	1921ms	35.4 MiB	Python 3	126 Bytes	2026-10-1 15:44:08