"""
Question: Write a Python program to accept marks of a student and print the grade according to the given criteria:
Marks ≥ 90: A
Marks ≥ 80: B
Marks ≥ 70: C
Marks ≥ 60: D
Otherwise: Fail
"""
marks = float(input("Enter the marks of the student: "))
if marks >= 90:
    print("Grade: A")
elif marks >= 80:
    print("Grade: B")
elif marks >= 70:
    print("Grade: C")
elif marks >= 60:
    print("Grade: D")
else:
    print("Grade: Fail")