#write a function that has two parameters - two integer lists
#function returns the number of elements that are the same and on the 
#same positions in both lists
#you can assume that both list have the same length

def compare_list(list_a, list_b):

	counter = 0 

	for i in range(len(list_a)):
		if (list_a[i]==list_b[i]):
			counter = counter + 1

	return counter

def main():

	list_a = [1, 2, 3, 4, 5, 6, 7]
	list_b = [1, 4, 5, 4, -5, 6, 8]
	
	counter = compare_list(list_a, list_b)

	if (counter ==0):
		print("none of elements are the same on the same positions ")
	elif(counter == len(list_a)):
		print("both lists are the same")
	else:
		print("there are ", counter, "elements the same on the same position")
main()