【例23.2】这个月有几天

Status	Submit By	Time	Memory	Language	Code	Submit At
AC	张若煊	31ms	508 KiB	C++98	417 Bytes	2025-9-27 20:47:45
AC	朱梓霖	31ms	504 KiB	C++98	344 Bytes	2025-10-7 17:51:44
AC	庞少卿	31ms	760 KiB	C++98	452 Bytes	2025-10-21 17:08:20
AC	陈沛宜	31ms	508 KiB	C++98	345 Bytes	2025-12-11 13:01:29
AC	冼子童	31ms	760 KiB	C++98	277 Bytes	2025-12-3 11:47:07
AC	劳钰峰	32ms	504 KiB	C++98	215 Bytes	2025-10-22 21:36:33
AC	李文茵	32ms	760 KiB	C++98	377 Bytes	2025-12-25 14:28:10
AC	谢钰莹	32ms	760 KiB	C++98	377 Bytes	2025-12-14 19:49:24
AC	朱子轩	34ms	764 KiB	C++98	345 Bytes	2025-9-16 20:18:02