Python:

a = [1, 2, 3, 4, 5, 6, 7, 8, 9]

even_counter = 0

odd_counter = 0

for i in a:

   if i % 2 == 0:

       even_counter += 1

   else:

       odd_counter += 1

print("Четных:", even_counter)

print("Нечетных:", odd_counter)