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