练30.2 错误减法

Status	Submit By	Time	Memory	Language	Code	Submit At
AC	chenzihao	47ms	768 KiB	C++11	196 Bytes	2024-7-24 15:40:38
AC	chenwangzixuan	49ms	764 KiB	C++11	205 Bytes	2024-7-29 11:04:12
AC	liujinghang	53ms	552 KiB	C++11	322 Bytes	2024-8-4 16:11:00
AC	ludaichen	55ms	548 KiB	C++11	217 Bytes	2024-7-25 16:47:59
AC	maochenyi	55ms	764 KiB	C++11	297 Bytes	2024-7-28 12:40:13
AC	zhuxuanyu	55ms	768 KiB	C++11	234 Bytes	2024-7-20 22:11:30