#include <bits/stdc++.h>
using namespace std;

signed main(){
  int N; cin >> N;
  vector< int > A( N );
  for( int i = 0; i < N; ++i )
    cin >> A[ i ];
  vector< vector< int > > dp( 2, vector< int >( 1 << 15 ) );
  dp[ 0 ][ 0 ] = 1;
  for( int i = 0; i < N; ++i ){
    for( int j = 0; j < 1 << 15; ++j )
      dp[ 1 ][ j ] |= dp[ 0 ][ j ],
      dp[ 1 ][ j ^ A[ i ] ] |= dp[ 0 ][ j ];
    swap( dp[ 0 ], dp[ 1 ] );
  }
  int ans = 0;
  for( int i = 0; i < 1 << 15; ++i )
    ans += dp[ 0 ][ i ];
  cout << ans << endl;
  return 0;
}