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

#define FOR(i,a,b) for(int (i)=(a);i<(int)(b);i++)
#define rep(i,n) FOR(i,0,n)

int main() {
    int N; cin >> N;
    vector<int> A(N);
    for (int& i : A) cin >> i;

    static bool dp[5010][40000] = {{0},{0}};
    dp[0][0] = 1;
    rep(i, N) rep(x, 40000) if (dp[i][x]) {
        dp[i + 1][x] |= dp[i][x];
        dp[i + 1][x ^ A[i]] |= dp[i][x];
    }

    int ans = 0;
    rep(x, 40000) ans += (dp[N][x]);
    cout << ans << endl;
    return 0;
}