该算法模拟渡口管理。过江渡船每次能载10辆车过江，过江车辆分为客车类和货车类，上渡船有如下规定：同类车先到先上船，客车先于货车上渡船-The algorithm simulated crossing management. Ferry crossing the river each can carry 10 vehicles crossing the river, the river is divided into passenger vehicles and goods category, on the ferry the following provisions: first-come, first ship of similar cars, buses before the truck ferry