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

typedef long long ll;
#define REP(i,n) for(int i=0,_n=(int)(n);i<_n;++i)
#define ALL(v) (v).begin(),(v).end()
#define CLR(t,v) memset(t,(v),sizeof(t))
template<class T1,class T2>ostream& operator<<(ostream& os,const pair<T1,T2>&a){return os<<"("<<a.first<<","<<a.second<< ")";}
template<class T>void pv(T a,T b){for(T i=a;i!=b;++i)cout<<(*i)<<" ";cout<<endl;}
template<class T>void chmin(T&a,const T&b){if(a>b)a=b;}
template<class T>void chmax(T&a,const T&b){if(a<b)a=b;}

int nextInt() { int x; scanf("%d", &x); return x;}

// 01ベクトルのランクを求める
int binary_matrix_rank(vector<ll> A) {
  const int N = A.size();
  const int M = 62;

  auto at = [](const ll Ai, int j) -> int {
    return Ai >> (M - 1 - j) & 1;
  };

  int s = 0;
  REP(j, M) {
    int p = -1;
    for (int i = s; i < N; i++) if (at(A[i], j)) { p = i; break; }
    if (p >= 0) {
      swap(A[s], A[p]);
      for (int i = s+1; i < N; i++) if (at(A[i], j)) A[i] ^= A[s];
      s++;
    }
  }
  return s;
}

int main2() {
  int N = nextInt();
  vector<ll> A(N);
  REP(i, N) cin >> A[i];
  int r = binary_matrix_rank(A);
  ll ans = 1LL << r;
  cout << ans << endl;
  return 0;
}

int main() {

#ifdef LOCAL
  for (;!cin.eof();cin>>ws)
#endif
    main2();
  return 0;
}