class Person:
    def __init__(self, first_name, last_name, id_number):
        self.first_name = first_name
        self.last_name = last_name
        self.id_number = id_number

    def print_person(self):
        print("Name:", self.last_name + ",", self.first_name)
        print("ID:", self.id_number)


class Student(Person):
    def __init__(self, first_name, last_name, id_number, test_scores):
        super().__init__(first_name, last_name, id_number)
        self.test_scores = test_scores

    def calculate(self):
        total = 0
        for test_score in self.test_scores:
            total += test_score

        avg = total / len(self.test_scores)

        if 90 <= avg <= 100:
            return 'O'
        if 80 <= avg < 90:
            return 'E'
        if 70 <= avg < 80:
            return 'A'
        if 55 <= avg < 70:
            return 'P'
        if 40 <= avg < 55:
            return 'D'
        return 'T'


line = input().split()
first_name = line[0]
last_name = line[1]
id_num = line[2]
num_scores = int(input())
scores = list(map(int, input().split()))
s = Student(first_name, last_name, id_num, scores)
s.print_person()
print("Grade:", s.calculate())