【例23.2】这个月有几天

状态	递交者	时间	内存	语言	代码	递交时间
AC	Exeyes_BCNR	15ms	256 KiB	C	376 Bytes	2026-9-28 23:03:04
AC	荔枝lz	15ms	512 KiB	C	450 Bytes	2026-9-20 10:00:52
AC	152630404–付小糖	15ms	256 KiB	C	750 Bytes	2026-9-18 1:39:59
AC	042600830林贤宸	15ms	256 KiB	C	389 Bytes	2026-9-30 21:25:03
AC	wallin	15ms	512 KiB	C	735 Bytes	2026-10-1 23:07:54
AC	032660104王志禹	15ms	256 KiB	C	294 Bytes	2026-9-20 19:40:18
AC	TrailBlaze	15ms	512 KiB	C	291 Bytes	2026-10-5 15:16:07
AC	042600602	15ms	256 KiB	C	407 Bytes	2026-9-19 23:09:07
AC	052620114罗子昕	15ms	256 KiB	C	497 Bytes	2026-9-28 10:26:51
AC	+++	17ms	256 KiB	C	393 Bytes	2026-9-21 18:36:18