# Arup Guha
# 6/12/2018
# Program to convert a percentage to a letter grade.

# Get the user input.
perc = int(input("What percentage did you get in the class?\n"))

if perc >= 60:
    print("You got an D.")
elif perc >= 70:
    print("You got a C.")
elif perc >= 80:
    print("You got a B.")
elif perc >= 90:
    print("You got a A.")
else:
    print("You got an F.")
    
print("if is over.")