12 th day: Inheritance.

class Person:
	def __init__(self, firstName, lastName, idNumber):
		self.firstName = firstName
		self.lastName = lastName
		self.idNumber = idNumber
	def printPerson(self):
		print("Name:", self.lastName + ",", self.firstName)
		print("ID:", self.idNumber)

class Student(Person):
    def __init__(self,firstName,lastName,idNum,scores):
        Person.__init__(self, firstName, lastName, idNum)
        self.scores = scores
    def calculate(self):
        a = sum(scores)
        avg = a/(len(scores))
        if  avg>=90 and avg<=100:
            return 'O'
        if  avg>=80 and avg<90:
            return 'E'
        if  avg>=70 and avg<80:
            return 'A'
        if  avg>=55 and avg<70:
            return 'P'
        if  avg>=40 and avg<55:
            return 'D'
        if  avg<40:
            return 'T'

   

line = input().split()
firstName = line[0]
lastName = line[1]
idNum = line[2]
numScores = int(input()) # not needed for Python
scores = list( map(int, input().split()) )
s = Student(firstName, lastName, idNum, scores)
s.printPerson()
print("Grade:", s.calculate())


'''Sample Input

Heraldo Memelli 8135627
2
100 80

Sample Output

 Name: Memelli, Heraldo
 ID: 8135627
 Grade: O
'''