#Write a program that first reads the number of items the person bought the store 
#and the tax. The program finds the total amount paid after tax applied. 

size=int(input("enter number of items you bought "))
tax=int(input("enter tax "))

if(size>0 and tax>=0):
	sum_price=0
	i=1
	while(i<=size):
		price=float(input("enter price of the item "))
		sum_price=sum_price+price
		i=i+1
	total=sum_price*(1+tax/100)
	print("total", format(total, '.2f'))
else:
	print("invalid input")

#Lab Report
#Input: size=3 tax=7 price: 1.99 7.99 8.99
#Output: 20.30 (calculations should be: (1.99+7.99+8.99)*(1+7/100)