练20.2 判断是否为两位数

Status	Submit By	Time	Memory	Language	Code	Submit At
AC	李锦泽	26ms	540 KiB	C++14(O2)	151 Bytes	2024-4-2 19:45:15
AC	YS白龙	27ms	764 KiB	C++14(O2)	156 Bytes	2024-3-9 19:35:04
AC	cqqq	28ms	768 KiB	C++14(O2)	197 Bytes	2024-12-22 14:09:45
AC	zhiyinnitaimei	31ms	416 KiB	C++14(O2)	210 Bytes	2024-1-5 17:48:34
AC	张承韵	32ms	412 KiB	C++14(O2)	195 Bytes	2024-1-5 17:45:29
AC	Dream dream	37ms	764 KiB	C++14(O2)	139 Bytes	2024-1-31 22:45:24