统计数字字符个数

状态	递交者	时间	内存	语言	代码	递交时间
AC	HH32_10.11.2.225	34ms	808 KiB	C++14(O2, GCC 9.3.0)	293 Bytes	2025-11-24 11:48:24
AC	HH24_10.11.2.243	35ms	808 KiB	C++14(O2, GCC 9.3.0)	405 Bytes	2025-11-24 11:48:23
AC	HH12_10.11.2.205	35ms	692 KiB	C++14(O2, GCC 9.3.0)	291 Bytes	2025-11-24 11:48:23
AC	HH09_10.11.2.209	36ms	808 KiB	C++14(O2, GCC 9.3.0)	300 Bytes	2025-11-24 11:48:22
AC	HH15_10.11.2.218	37ms	784 KiB	C++14(O2, GCC 9.3.0)	275 Bytes	2025-11-24 11:48:23
AC	HH07_10.11.2.224	37ms	808 KiB	C++14(O2, GCC 9.3.0)	297 Bytes	2025-11-24 11:48:22
AC	HH11_10.11.2.248	38ms	808 KiB	C++14(O2, GCC 9.3.0)	393 Bytes	2025-11-24 11:48:22