#include <iostream>

using namespace std;

short int map[5001][0b1000000000000000]={0};

int main(){
  int H;
  int A[5000];
  cin >> H;
  for(int i=0;i<H;i++){
    cin >> A[i];
  }
  map[0][0]=1;
  int count=0;
  for(int i=0;i<H;i++){
    for(int j=0;j<0b1000000000000000;j++){
      if(map[i][j]==1){
        map[i+1][j]=1;
        map[i+1][j^A[i]]=1;
      }
    }
  }
  int counter=0;
  for(int i=0;i<0b1000000000000000;i++){
    counter+=map[H][i];
  }
  cout << counter <<endl;
}