求出 e 的值

Status	Submit By	Time	Memory	Language	Code	Submit At
AC	xzh13579	34ms	812 KiB	C++14(O2)	226 Bytes	2025-8-6 16:15:38
AC	陈国瑞	35ms	808 KiB	C++14(O2)	224 Bytes	2025-7-15 17:31:24
AC	_chjich_	38ms	808 KiB	C++14(O2)	276 Bytes	2025-7-11 9:54:32
AC	女乃龙	39ms	812 KiB	C++14(O2)	204 Bytes	2025-7-11 15:35:49