Fuel Gauge

def main():
    while True:
        try:
            fraction = input("Fraction: ")
            x, y = fraction.split("/")
            x = int(x)
            y = int(y)

            if y == 0:
                continue  # Can't divide by zero
            if x > y:
                continue  # Invalid fraction

            percent = round((x / y) * 100)

            if percent <= 1:
                print("E")
            elif percent >= 99:
                print("F")
            else:
                print(f"{percent}%")
            break  # Exit the loop once valid input is handled

        except (ValueError, ZeroDivisionError):
            # If input is not valid (e.g., not integers or can't split), try again
            continue

if __name__ == "__main__":
    main()