2.1. Letter Grade 2

In our letter grade system, our total point obtained in a course is converted to a letter grade. In this question, you will write a program that reads the total point from the user and prints the corresponding letter grade.
Total point intervals and their letter grade equivalents:
- 90-100 \(\rightarrow\) AA
- 85-89 \(\rightarrow\) BA
- 80-84 \(\rightarrow\) BB
- 75-79 \(\rightarrow\) CB
- 70-74 \(\rightarrow\) CC
- 65-69 \(\rightarrow\) DC
- 60-64 \(\rightarrow\) DD
- 50-59 \(\rightarrow\) FD
- 0-49 \(\rightarrow\) FF

Sample I/O:

Input:
50

Output:
FD

Input:
71

Output:
CC

Input:
89

Output:
BA
total_point = int(input())

if 0 <= total_point < 50:
    print("FF")
elif 50 <= total_point < 60:
    print("FD")
elif 60 <= total_point < 65:
    print("DD")
elif 65 <= total_point < 70:
    print("DC")
elif 70 <= total_point < 75:
    print("CC")
elif 75 <= total_point < 80:
    print("CB")
elif 80 <= total_point < 85:
    print("BB")
elif 85 <= total_point < 90:
    print("BA")
elif 90 <= total_point <= 100:
    print("AA")