using System;
namespace ConsoleApp9
{
    class Program
    {
        static void Main(string[] args)
        {
            var numbers = Console.ReadLine().Split(' ');
            var findTheOdd = new int[numbers.Length];
            for (int i = 0; i < numbers.Length; i++)
            {
                findTheOdd[i] = int.Parse(numbers[i]);
            }
            int oddCounter = 0;
            for (int i = 0; i < findTheOdd.Length; i++)
            {
                if (findTheOdd[i] % 2 == 1 || findTheOdd[i] % 2 == -1)
                {
                    oddCounter++;
                }
            }
            Console.WriteLine(oddCounter);
        }
    }
}