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, idNumber, scores):
    self.firstName = firstName
    self.lastName = lastName
    self.idNumber = idNumber
    self.scores = scores
  def calculate(self):
    avg_score = sum(self.scores) / len(self.scores)
    if avg_score >= 90 and avg_score <= 100:
      return 'O'
    elif avg_score >= 80 and avg_score < 90:
      return 'E'
    elif avg_score >= 70 and avg_score < 80:
      return 'A'
    elif avg_score >= 55 and avg_score < 70:
      return 'P'
    elif avg_score >= 40 and avg_score < 55:
      return 'D'
    else:
      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())