if False:
    print("ooooo")

###
    
x = 3
if -10 < x and x < 10:
    print("one digit")
else:
    print("multi digit")
    
###
    
grade = 47
if grade >= 90:
    print("A")
elif grade >= 80:
    print("B")
elif grade >= 70:
    print("C")
elif grade >= 60:
    print("D")
else:
    print("R")