Academic grading in universities commonly takes on the form of letter grades, including A, B, ..., and E. On the other hand, the percentage grading system with which we are familiar in high school ranges from 0 to 100.
Now, given a percentage-based grade, you are asked to calculate the corresponding letter in letter-based format using the following rules:
| letter-based | A | B | C | D | E |
|---|---|---|---|---|---|
| percentage-based | 100 ~ 80 | 79 ~ 70 | 69 ~ 60 | 59 ~ 50 | 49 ~ 0 |
Your program should take 4 test cases at a time.
[Hint] You may use the following template code:
lines = []
for i in range(4):
line = input()
pGrade = int(line) # Convert to integer
lines.append(pGrade) # Add to list
for pGrade in lines:
# YOUR CODE HERE
Four lines of number. Each line contains one percentage-based grade.
Four lines of corresponding letter-based grade. In the order of them in the input file.