说明：  出于不同目的的旅客对交通工具有不同的要求。例如，因公出差的旅客希望在旅途中 的时间尽可能短，出门旅游的游客则期望旅费尽可能省，而老年旅客则要求中转次数最少。 编制一个全国城市间的交通咨询程序，为旅客提供两种或三种最优决策的交通咨询。
(For passenger vehicles for different purposes have different requirements. For example, travelers on business trip in the hope of Time as short as possible, it is desirable to go tourists travel the province as possible, while elderly passengers are asked to relay the least number. Preparation of a traffic advisory program between cities nationwide, provide passengers with two or three of the Transport Advisory optimal decision.)