# Write program to get four scores:
#    hw (or programming assignments)
#    project
#    exams
#    lab (or participation)
# from a user (via a keyboard).
# You may assume that the user will enter
# these scores in percentages
#
# Refer to the Assessment section from our course syllabus
# (cs1110.cs.virginia.edu/syllabus.html).
# Compute the overall scores (in percentage) and
# display it on screen
#
# Optional: Calculate the final letter grade and
# display it on screen
# (assume we only compute grades between A to C grades,
# do not display any other letter grades)



# get scores from keyboard
hw = float(input("Enter hw score: "))
project = float(input("Enter project score: "))
exams = float(input("Enter exams score: "))
lab = float(input("Enter lab score: "))

# convert scores according the Assessment weights
hw = (hw * 31.5) / 100
project = (project * 7.5) / 100
exams = (exams * 50) / 100
lab = (lab * 11) / 100

# compute overall scores
sum = hw + project + exams + lab

print(sum)

# calculate the final letter grade
# (assume we only compute grades between A to C grades)
if (sum >= 93):
    print("A")
elif (sum >= 90):
    print("A-")
elif (sum >= 86):
    print("B+")
elif (sum >= 83):
    print("B")
elif (sum >= 80):
    print("B-")
elif (sum >= 76):
    print("C+")
elif (sum >= 73):
    print("C")