weight = float(input("Enter weight (kg): "))
height = float(input("Enter height (m): "))

bmi = weight / height ** 2
print(f"BMI = {bmi:.2f}")

def calculate_bmi(weight_kg, height_m):
    """
    Calculates the Body Mass Index (BMI).

    Args:
        weight_kg (float): The individual's weight in kilograms.
        height_m (float): The individual's height in meters.

    Returns:
        float: The calculated BMI.
    """
    if height_m <= 0:
        raise ValueError("Height cannot be zero or negative.")
    bmi = weight_kg / (height_m ** 2)
    return bmi

def interpret_bmi(bmi):
    """
    Interprets the calculated BMI and returns a corresponding category.

    Args:
        bmi (float): The calculated BMI.

    Returns:
        str: The BMI category (e.g., "Underweight", "Healthy Weight").
    """
    if bmi < 18.5:
        return "Underweight"
    elif 18.5 <= bmi < 24.9:
        return "Healthy Weight"
    elif 24.9 <= bmi < 29.9:
        return "Overweight"
    else:
        return "Obesity"

# Get user input
try:
    weight = float(input("Enter your weight in kilograms (kg): "))
    height = float(input("Enter your height in meters (m): "))

    # Calculate BMI
    bmi_value = calculate_bmi(weight, height)

    # Interpret BMI
    bmi_category = interpret_bmi(bmi_value)

    # Display results
    print(f"\nYour BMI is: {bmi_value:.2f}")
    print(f"Based on your BMI, you are categorized as: {bmi_category}")

except ValueError as e:
    print(f"Error: {e}. Please enter valid numerical values for weight and height.")