#include <bits/stdc++.h>
#define syosu(x) fixed<<setprecision(x)
using namespace std;
typedef long long ll;
typedef unsigned long long ull;
typedef pair<int,int> P;
typedef pair<double,double> pdd;
typedef pair<ll,ll> pll;
typedef vector<int> vi;
typedef vector<vi> vvi;
typedef vector<double> vd;
typedef vector<vd> vvd;
typedef vector<ll> vl;
typedef vector<vl> vvl;
typedef vector<string> vs;
typedef vector<P> vp;
typedef vector<vp> vvp;
typedef vector<pll> vpll;
typedef pair<int,P> pip;
typedef vector<pip> vip;
const int inf=1<<30;
const ll INF=1ll<<60;
const double pi=acos(-1);
const double eps=1e-9;
const ll mod=1e6+7;
const int dx[4]={0,1,0,-1},dy[4]={1,0,-1,0};

int n;
vl a;

int main(){
	cin>>n;
	a=vl(n);
	for(int i=0;i<n;i++) cin>>a[i];
	for(int i=0;i<61;i++){
		int I=i;
		for(int j=i+1;j<n;j++) if(a[j]&1ll<<i) I=j;
		swap(a[i],a[I]);
		for(int j=i+1;j<n;j++) if(a[j]&1ll<<i) a[j]^=a[i];
	}
	ll t=1;
	for(auto i:a) if(i) t*=2;
	cout<<t<<endl;
}