#include <stdio.h>
#include <bits/stdc++.h>
#include <atcoder/all>
using namespace atcoder;
using mint = modint;
using namespace std;
#define rep(i,n) for (int i = 0; i < (n); ++i)
#define Inf 1000000001

vector<long long> func(vector<long long> A){
	int last = 0;
	for(long long i=60;i>=0;i--){
		int ind = -1;
		for(int j=last;j<A.size();j++){
			if((A[j]>>i) & 1LL){
				ind = j;
				break;
			}
		}
		if(ind==-1)continue;
		for(int j=0;j<A.size();j++){
			if(j!=ind){
				if((A[j]>>i)&1LL){
					A[j] ^= A[ind];
				}
			}
		}
		swap(A[last],A[ind]);
		last++;
	}
	while(A.size()!=0&&A.back()==0)A.pop_back();
	return A;
}

int main(){	
	
	int n;
	cin>>n;
	vector<long long> a(n);
	rep(i,n)cin>>a[i];
	
	a = func(a);
	
	long long ans = 1LL << a.size();
	
	cout<<ans<<endl;
	
	return 0;
	
}