using System;
using System.Collections.Generic;
using System.Linq;
using System.IO;
using System.Text;

namespace Solver
{
    class Program
    {
        const int M = 1000000007;
        static void Main()
        {
            /*
            string textFile = @"C:\Users\Rikuto\Downloads\481-testcase\test_in\20_random_large01.in";
            Encoding enc = Encoding.GetEncoding("shift_jis");
            string[] lines = File.ReadAllLines(textFile, enc);
            int n = int.Parse(lines[0]);
            long[] a = lines[1].Trim().Split().Select(long.Parse).ToArray();
            */

            var sw = new System.IO.StreamWriter(Console.OpenStandardOutput()) { AutoFlush = false };
            Scan sc = new Scan();
            int n = sc.Int();
            long[] a = sc.LongArray();
            var set = new SortedSet<long>();
            foreach (long i in a)
                set.Add(i);

            while (true)
            {
                long pre = 0;
                var l = new SortedSet<long>();
                foreach (long i in set)
                {
                    l.Add(Math.Min(i, pre ^ i));
                    pre = i;
                }
                if (set.Count == l.Count)
                    break;

                set.Clear();
                foreach (long i in l)
                    set.Add(i);
            }

            sw.WriteLine((long)1 << set.Count);
            sw.Flush();
        }
    }

    class Scan
    {
        public int Int()
        {
            return int.Parse(Console.ReadLine().Trim());
        }
        public long Long()
        {
            return long.Parse(Console.ReadLine().Trim());
        }
        public string Str()
        {
            return Console.ReadLine().Trim();
        }

        public int[] IntArray()
        {
            return Console.ReadLine().Trim().Split().Select(int.Parse).ToArray();
        }
        public void IntTwi(out int a, out int b)
        {
            int[] arr = IntArray();
            a = arr[0];
            b = arr[1];
        }
        public void LongTwi(out long a, out long b)
        {
            long[] arr = LongArray();
            a = arr[0];
            b = arr[1];
        }
        public void StrTwi(out string a, out string b)
        {
            string[] arr = StrArray();
            a = arr[0];
            b = arr[1];
        }

        public long[] LongArray()
        {
            return Console.ReadLine().Trim().Split().Select(long.Parse).ToArray();
        }
        public string[] StrArray()
        {
            return Console.ReadLine().Trim().Split();
        }
    }
}