练18.4 计算邮资

Status	Submit By	Time	Memory	Language	Code	Submit At
AC	wangyonglin	25ms	768 KiB	C++98	417 Bytes	2024-7-26 10:31:28
AC	pengtaifu	25ms	536 KiB	C++98	304 Bytes	2024-8-8 14:34:53
AC	nianyanimen	27ms	764 KiB	C++98	601 Bytes	2024-7-26 10:31:26
AC	zhuyinuo	28ms	768 KiB	C++98	510 Bytes	2025-1-22 10:41:11
AC	lihaorui	29ms	764 KiB	C++98	312 Bytes	2025-1-23 9:12:12
AC	jihaoyuan	30ms	764 KiB	C++98	312 Bytes	2025-1-22 17:14:32