判断是否为两位数

状态	递交者	时间	内存	语言	代码	递交时间
AC	kcy3	10ms	6.5 MiB	C++17	184 Bytes	2024-4-18 20:27:25
AC	wangyiyu001	10ms	6.3 MiB	C++14(O2)	145 Bytes	2025-6-4 20:26:03
AC	shengyoucheng001	10ms	6.3 MiB	C++14(O2)	148 Bytes	2025-6-4 20:27:00
AC	taosong001	10ms	6.3 MiB	C++14(O2)	141 Bytes	2025-6-4 20:26:49
AC	lijiage001	11ms	6.4 MiB	C++17	140 Bytes	2025-5-10 10:44:55
AC	yingshihhan001	11ms	6.3 MiB	C++14(O2)	134 Bytes	2025-6-4 20:25:15
AC	lirunjin001	14ms	6.5 MiB	C++14(O2)	140 Bytes	2025-6-12 21:18:12