using System;
using System.Linq;

class Program
{
    static void Main(string[] args)
    {
        // No.99 ジャンピング駒

        int N = int.Parse(Console.ReadLine());
        long[] X = Console.ReadLine().Split(' ').Select(s => long.Parse(s)).ToArray();
        int odd = 0, even = 0;

        for (int i = 0; i < X.Length; i++)
        {
            if (Math.Abs(X[i] % 2) == 1)
                odd++;
            else
                even++;
        }

        Console.WriteLine(Math.Abs(odd-even));
    }
}