using System;
using System.Collections.Generic;
using System.Linq;

namespace Test01
{
    class Program
    {
        
        static void Main(string[] args)
        {
            int N = int.Parse(Console.ReadLine());
            string[] input = Console.ReadLine().Split(' ');

            int[] a = new int[N + 1];
            for (int i = 1; i <= N; i++) a[i] = int.Parse(input[i - 1]);

            int max = 32767;
            bool[,] dp = new bool[N + 1, max + 1];
            dp[0, 0] = true;
            for(int i = 1; i <= N; i++)
            {
                for(int j = max; j >= 0; j--)
                {
                    dp[i, j] = dp[i - 1, j];
                    if ((j ^ a[i]) <= max) dp[i, (j ^ a[i])] |= dp[i, j];
                }
            }

            int cnt = 0;
            for(int i = 0; i <= max; i++)
            {
                if (dp[N, i]) cnt++;
            }

            Console.WriteLine(cnt);
        }
    }
}