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

#undef _P
#define _P(...) (void)printf(__VA_ARGS__)
#define FORR(x,arr) for(auto&& x:arr)
#define FOR(i,a,b) for (int i = (a); i < (b); i++)
#define RFOR(i,a,b) for (int i = (b)-1; i >= (a); i--)
#define REP(i,n) for (int i = 0; i < (n); i++)
#define RREP(i,n) for (int i = (n)-1; i >= 0; i--)
#define ALL(x) (x).begin(), (x).end()
#define ITR(x,c) for(__typeof(c.begin()) x=c.begin();x!=c.end();x++)
#define RITR(x,c) for(__typeof(c.rbegin()) x=c.rbegin();x!=c.rend();x++)
#define BIT(n) (1LL<<(n))
#define SZ(x) ((int)(x).size())
typedef long long ll;
// -------------------------------------

int N;

void Main() {
  cin >> N;
  vector<int> A(N);
  REP(i, N) cin >> A[i];
  
  sort(ALL(A));
  A.erase(unique(A.begin(), A.end()), A.end());
  N = SZ(A);
  
  set<int> *p = new set<int>();
  set<int> *c = new set<int>();
  
  p->insert(0);
  
  FORR(x, A) {
    FORR(y, *p) {
      c->insert(y);
      c->insert(x ^ y);
    }
    swap(p, c);
  }
  
  cout << SZ(*p) << endl;
}
int main() { cin.tie(0); ios::sync_with_stdio(false); Main(); return 0; }