#function passed a class grade (ABCDF) and credit, return the GPA points
def credit_pts (grade, credits):

    if grade == 'A':
        points = credits * 4
    elif grade == 'B':
        points = credits * 3
    elif grade == 'C':
        points = credits * 2
    elif grade == 'D':
        points = credits
    elif grade == 'F':
        points = 0;

    return points

#*******************************
'''
if 1234 == '1234':   #string and number never equal
    print('yes')
else:
    print('no')
'''
          
gr = input("Enter a grade ABCDF: ")
creds = eval(input("Enter the credits: "))
pts = credit_pts(gr, creds)
print("Points =", pts)

#print(asdf)