#!/usr/bin/python3
def main():
	numbers = [1,2,3,4,5,6,7,8,9,10]
	even_numbers = list(filter(lambda x: x % 2 == 0, numbers))
	count_even = len(even_numbers)
	print("Πλήθος άρτιων αριθμών:", count_even)
if __name__=="__main__":
	main()