import scala.io.StdIn.readLine

object Main{
  def ipow(x : Long,n : Long) : Long = {
    if(x == 0)
      1
    else if(n % 2 == 0)
      ipow(x*x,n/2)
    else
      x * ipow(x*x,n/2)
  }

  def to_bit_str(x : Long) : String = {
    val bi = (0 to 62).map((i : Int) => if ((x & (1L << i)) != 0) "1" else "0" ).reverse
    bi.map(_.toString).fold("")(_ + _)
  }

  def main(args: Array[String]){
    val n = readLine().toLong
    val a = readLine().split(" ").map(_.toLong)
    val used = scala.collection.mutable.Set[Int]()
    val MAXK = 62
    for(k <- MAXK to 0 by -1){
      val mask = 1L << k
      val usable = (v : (Long,Int)) => v match {
        case (e,i) => !used(i) && (e & mask) != 0
      }
      a.zipWithIndex.find(usable) match {
        case Some((e,i)) => {
          used += i
          a.zipWithIndex.filter(usable).map((v) => v match {
            case (_,i) => i
          })
          .foreach((h) => a(h) = a(h) ^ e);
        }
        case None => Unit
      }
    }
    println(ipow(2,a.count(_ != 0)))
  }
}