作业：公交卡充值问题

Status	Submit By	Time	Memory	Language	Code	Submit At
AC	wangyuxiang	9ms	9 MiB	C++98	242 Bytes	2024-12-6 20:27:55
AC	liuhaoqi	10ms	9 MiB	C++98	267 Bytes	2024-11-17 10:17:34
AC	baoyufu	10ms	9 MiB	C++98	331 Bytes	2024-12-6 19:25:49
AC	xvls	15ms	9.1 MiB	C++98	212 Bytes	2025-11-28 20:05:33
AC	yangshengbo	17ms	9.1 MiB	C++98	216 Bytes	2025-11-30 17:43:29
AC	huangshengfeng	23ms	9 MiB	C++98	345 Bytes	2025-5-3 21:24:25