#include<iostream>
#include<queue>
#include<numeric>
using namespace std;
const int VAL = 5005;
const int RANGE = (1 << 15) + 5;


int nVal, val[VAL];

void read() {
    cin >> nVal;
    for (int i = 0; i < nVal; ++i)
        cin >> val[i];
}


void work() {
    bool visited[RANGE] = {};
    queue<int> Q;
    
    visited[0] = true;
    Q.push(0);
    
    while (!Q.empty()) {
        int cur = Q.front();
        Q.pop();
        
        for (int i = 0; i < nVal; ++i) {
            int nex = cur ^ val[i];
            if (!visited[nex]) {
                visited[nex] = true;
                Q.push(nex);
            }
        }
    }
    
    cout << accumulate(visited, visited + RANGE, 0) << endl;
}


int main() {
    read();
    work();
    return 0;
}