#!/usr/local/python
# coding=utf-8

score = int(raw_input("Please a num: "))
if score >= 90:
    print 'A'
    print 'Very good'
elif score >= 80:
    print 'B'
    print 'good'
elif score >= 70:
    print 'C'
    print 'pass'
else:
    print 'D'

# bool
# True 表示非空的量(string tuple list set dictonaty) 所有非零数
# False 表示0 None 空的量等



4d804fa16c6fd0673c90182e61e55c5966d2c24e
#!/usr/local/python
# coding=utf-8

score = int(raw_input("Please a num: "))
if score >= 90:
    print 'A'
    print 'Very good'
elif score >= 80:
    print 'B'
    print 'good'
elif score >= 70:
    print 'C'
    print 'pass'
else:
    print 'D'

# bool
# True 表示非空的量(string tuple list set dictonaty) 所有非零数
# False 表示0 None 空的量等


