class Bus{
    public string Model {get;}
    public string Number {get;}    
    public Driver Driver {get;}   
    public Line Line{get;}
    public Bus(string model, string number, Driver driver, Line line){
        Model = model;
        Number = number;
        Driver=driver;
        Line=line;
    }
}

class Driver{
    public string Name {get;}    
    public Driver(string name){
        Name = name;        
    }
}

class Line{
    public DateTime GoTime {get;}
    public string Number {get;}    
    public Line(DateTime goTime, string number){
        GoTime = goTime;
        Number = number;
    }
}