【例21.3】字符类型判断

状态	递交者	时间	内存	语言	代码	递交时间
AC	240101460007	12ms	548 KiB	C++17(O2)	275 Bytes	2025-3-23 15:33:17
AC	240101460059	146ms	4 MiB	Python 3	196 Bytes	2025-7-22 11:14:09
AC	240101460314	159ms	4 MiB	Python 3	158 Bytes	2025-5-10 16:51:06
AC	240101460475	169ms	4 MiB	Python 3	143 Bytes	2025-5-9 12:43:06
AC	240101460334	170ms	4.2 MiB	Python 3	186 Bytes	2025-3-23 8:53:32
AC	240101460077	171ms	4 MiB	Python 3	138 Bytes	2025-4-5 21:13:17
AC	240101460081	171ms	4 MiB	Python 3	143 Bytes	2025-5-28 14:08:14
AC	240101460028	172ms	4 MiB	Python 3	157 Bytes	2025-8-17 22:06:16