# 2288. Apply Discount to Prices


class Solution:
    def discountPrices(self, sentence: str, discount: int) -> str:
        
        def is_price(s):
            return s[0] == '$' and s[1::].isdigit()
        
        def discounted(ele, discount):
            factor = (100 - discount) / 100
            n = int(ele[1::])
            x = n * factor
            return '$' + '{:.2f}'.format(x)
        
        li = sentence.split()
        for i, ele in enumerate(li):
            if is_price(ele):
                li[i] = discounted(ele, discount)
                
        return ' '.join(li)