判断是否为两位数

Status	Submit By	Time	Memory	Code	Submit At
AC	哈哈哈	36ms	724 KiB	135 Bytes	2023-7-2 12:49:27
AC	CCCCrack_	37ms	680 KiB	224 Bytes	2023-6-29 10:40:07
AC	哈哈哈	37ms	684 KiB	135 Bytes	2023-7-2 12:49:06
AC	I am not a thing	38ms	728 KiB	162 Bytes	2023-7-2 10:23:36
AC	哈哈哈	38ms	688 KiB	135 Bytes	2023-7-2 12:48:51
AC	哈哈哈	38ms	728 KiB	137 Bytes	2023-7-2 10:00:14
AC	张明赫dc	39ms	724 KiB	495 Bytes	2023-7-4 19:34:46
AC	史蒂夫	39ms	728 KiB	160 Bytes	2023-7-1 10:53:28
AC	董的都懂	39ms	724 KiB	166 Bytes	2023-7-1 10:53:47
AC	Iris	39ms	684 KiB	162 Bytes	2023-7-1 13:13:35
AC	哈哈哈	39ms	680 KiB	137 Bytes	2023-7-2 12:45:11
AC	Minecraft	40ms	740 KiB	169 Bytes	2023-7-1 11:18:41