number = 1

number_list = []

while number != 0:

   number = int(input())

   number_list.append(number)

   if number == 0:

       number_list.remove(number)

       break

second_list = []

for num in number_list:

   if num % 4 == 0 and len(str(num)) == 3:

       second_list.append(num)

print(len(second_list))