#include <bits/stdc++.h>

using namespace std;

#define REP(i,n) for(int i=0; i<(int)(n); i++)
#define FOR(i,b,e) for (int i=(int)(b); i<(int)(e); i++)
#define ALL(x) (x).begin(), (x).end()

const double PI = acos(-1);

bool dp[2][1<<15];

int main() {
  ios_base::sync_with_stdio(0);
  cin.tie(0);

  int n;
  cin >> n;
  dp[0][0] = 1;
  REP (i, n) {
    int cur = i & 1;
    int nxt = (i+1) & 1;
    memset(dp[nxt], 0, sizeof(dp[nxt]));
    int x;
    cin >> x;
    REP (j, 1<<15) {
      if (dp[cur][j]) {
        dp[nxt][j] = 1;
        dp[nxt][j^x] = 1;
      }
    }
  }

  int ret = 0;
  REP (i, 1<<15) ret += dp[n&1][i];
  cout << ret << endl;
  
  return 0;
}