using System.Linq;
using System;

public class Hello
{
    static void Main()
    {
        var n = int.Parse(Console.ReadLine().Trim());
        string[] line = Console.ReadLine().Trim().Split(' ');
        var a = Array.ConvertAll(line, int.Parse);
        a = a.Distinct().ToArray();
        getAns(n, a);
    }
    static void getAns (int n, int [] a)
    {
        var imax = a.Max() * 2;
        var b = new bool[imax + 1];
        b[0] = true;
        foreach (var x in  a)
        {
            for (int i = imax ; i >= 0; i--)
            {
                if (b[i]) b[i ^ x] = true;
            }
        }
        var count = b.Count(x => x == true);
        Console.WriteLine(count);
    }
}