#Write a program that reads 5-digit integer, and 
#finds and prints the average of its EVEN digits. 
#If there are no even digits in the input, the program 
#prints an appropriate message

num=int(input("enter 5-digit number "))
if(num>=10000 and num<=99999):
	sum_evens=0
	count_evens=0
	for i in range(5):
		d=num%10
		if(d%2==0):
			sum_evens=sum_evens+d
			count_evens=count_evens+1
		num=num//10
	if(count_evens>0):
		print("count_evens",count_evens)
		print("average of even digits", sum_evens/count_evens)
	else:
		print("no even digits")
else:
	print("invalid input")