# coding:utf-8
def homework1():
s = input()
info = s.split(" ", 3)
id = info[0]
age = info[1]
exp = info[2]
major = info[3]
msg = '抱歉, 您不符合面试要求'
if major == "计算机" or (major == '电子' and exp >= 4) or major == '通信':
msg = '获得面试资格'
print(msg)
def homework2():
grade = int(input())
g = '成绩有误'
if (grade > 100):
g = '成绩有误'
elif (grade >= 90):
g = 'A'
elif (grade >= 80):
g = 'B'
elif (grade >= 70):
g = 'C'
elif (grade >= 60):
g = 'D'
elif (grade >= 0):
g = 'E'
print(g)
def __main():
homework1()
homework2()
__main()