Problem Statement

In this challenge, you must discount a price according to its value.

If the price is 300 or above, there will be a 30% discount.

If the price is between 200 and 300 (200 inclusive), there will be a 20% discount.

If the price is between 100 and 200 (100 inclusive), there will be a 10% discount.

If the price is less than 100, there will be a 5% discount.

If the price is negative, there will be no discount.