#mini quiz 3 version 1 with validity of the input

#Input: price > 0, age >= 0, tax >= 0

price=int(input("enter price "))
age=int(input("enter age "))
tax=int(input("enter tax "))

if(price > 0 and age >=0 and tax >=0):
	if(age<=5):
		discount=100
	elif(age<=18):
		discount=25
	else:
		discount=0

	
	final_price_pretax=price-price*discount/100
	final_price=final_price_pretax+final_price_pretax*tax/100
	print("final_price", final_price)

else:
	print("not valid input")