#include<bits/stdc++.h>
typedef long long ll;
using namespace std;
int INF = 1e9;
int MOD = 1e9+7;
bool dp[5001][32769];
main(){
    int N,A[5000];
    cin >> N;
    for(int i = 0;i < N;i++)cin >> A[i];
    dp[0][0] = 1;
    for(int i = 0;i < N;i++){
        for(int j = 0;j <= 16384*2;j++){
            if(dp[i][j]){
                dp[i+1][j^A[i]] = 1;
                dp[i+1][j] = 1;
            }
        }
    }
    int cnt = 0;
    for(int i = 0;i <= 16384*2;i++)cnt += dp[N][i];
    cout << cnt << endl;
}