统计数字字符个数

Status	Submit By	Time	Memory	Language	Code	Submit At
AC	ALT_fanzequn	19ms	20.4 MiB	C++14	375 Bytes	2026-9-26 22:38:55
AC	ALT_zhaochenxi	19ms	20.4 MiB	C++14	274 Bytes	2026-9-19 11:38:59
AC	ALT_wangluoqi	20ms	20.4 MiB	C++14	247 Bytes	2026-9-16 20:26:00
AC	admin	20ms	20.4 MiB	C++14	302 Bytes	2026-9-4 11:16:53
AC	ALT_chengyiheng	20ms	20.4 MiB	C++14	219 Bytes	2026-9-27 13:14:52
AC	ALT_liushiran	21ms	20.4 MiB	C++14	426 Bytes	2026-9-27 13:12:41
AC	ALT_gaojinyu	21ms	20.4 MiB	C++14	221 Bytes	2026-9-19 13:32:59
AC	Goodnight	21ms	20.4 MiB	C++14	315 Bytes	2026-9-28 20:34:20
AC	ALT_lichuanyu	21ms	20.4 MiB	C++14	247 Bytes	2026-9-18 20:35:58