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	wangyuxin	15ms	21 MiB	C++14(O2)	156 Bytes	2026-8-29 20:09:02
AC	weiruoxi	15ms	21 MiB	C++14(O2)	211 Bytes	2026-10-1 10:38:24
AC	zhangmingrui	15ms	21 MiB	C++14(O2)	144 Bytes	2026-10-1 10:32:24
AC	dingbowen	16ms	21 MiB	C++14(O2)	170 Bytes	2026-10-1 10:30:46
AC	huangsichen	16ms	21 MiB	C++14(O2)	164 Bytes	2026-10-1 10:36:54
AC	sunjingwei	16ms	21 MiB	C++14(O2)	183 Bytes	2026-10-2 8:31:20
AC	gaoyibo	16ms	21 MiB	C++14(O2)	152 Bytes	2026-8-24 21:05:44
AC	wangyichen	16ms	21 MiB	C++14(O2)	193 Bytes	2026-10-1 10:36:10
AC	liangxuanming	22ms	21 MiB	C++14(O2)	182 Bytes	2026-10-1 10:40:01