Fruit Basket Discount Calculator

You are given a list of fruits, each with a name and a price, and a discount percentage. Your task is to calculate the subtotal after applying the discount.

The subtotal is computed as:

$$\text{Subtotal} = \text{Total Price} - \left(\text{Total Price} \times \frac{\text{Discount}}{100}\right)$$

Round the result to two decimal places. Note that the input is provided via standard input (stdin) and you must print the output to standard output (stdout).

inputFormat

The input is given via standard input in the following format:

n
fruit1 price1
fruit2 price2
... (n lines in total)
discount

Where:

• n is an integer representing the number of fruits.
• Each of the next n lines contains a fruit name (string without spaces) and its price (a float).
• discount is a float representing the discount percentage.

outputFormat

Output the subtotal after applying the discount. The result must be rounded to two decimal places. If the result is an integer, output it with one decimal digit (for example, 9.0).

## sample

3
Apple 3.0
Orange 4.0
Banana 2.0
10.0

8.1