练20.2 判断是否为两位数

Status	Submit By	Time	Memory	Language	Code	Submit At
AC	manfen	27ms	768 KiB	C++11	176 Bytes	2024-12-29 8:27:16
AC	zhutianle	27ms	764 KiB	C++11	161 Bytes	2024-12-29 9:39:48
AC	zhangyuanyuan	28ms	548 KiB	C++11	130 Bytes	2024-12-29 8:40:18
AC	tongyizhen	29ms	768 KiB	C++11	172 Bytes	2024-12-29 9:38:50
AC	赵淼森	29ms	776 KiB	C++11	169 Bytes	2024-12-29 8:52:27
AC	weilaicheng	29ms	764 KiB	C++11	157 Bytes	2024-12-28 21:16:58
AC	zhengzihao	29ms	768 KiB	C++11	143 Bytes	2024-12-22 11:18:53