struct Lab{
    let number:Int;
    let points:Double;
    init(number:Int,points:Double)
    {
        self.number = number;
        self.points = points;
    }

}


class Student{
    let firstName:String;
    let lastName:String;
    let indexNumber:String;
    let lab:Lab;
    init(firstName:String,lastName:String,indexNumber:String,lab:Lab){
        self.firstName = firstName;
        self.lastName = lastName;
        self.indexNumber = indexNumber;
        self.lab = lab;
    }
}