import scala.io.StdIn.readLine

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

  def main(args: Array[String]) = {
    val n = readLine().toInt
    val a = readLine().split(" ").map(_.toInt).sorted.distinct
    val dp = Array.fill(ipow(2,15))(false)
    dp(0) = true
    for(ia <- a){
      for(i <- 0 until dp.length){
        dp(i ^ ia) = dp(i ^ ia) || dp(i)
      }
    }
    println(dp.count(_ == true))
  }
}