#include <iostream>
#include <map>
#include <vector>
using namespace std;
int main(void){
    // Here your code !
    int n;
    cin >> n;
    vector<int> a(n);
    for(int i=0;i<n;i++){
        cin >> a[i];
    }
    vector<vector<int>> dp(5001,vector<int>(1<<15));
    dp[0][0] = 1;
    for(int i=0;i<n;i++){
        for(int j=0;j<(1<<15);j++){
            if(dp[i][j] == 0)continue;
            dp[i+1][j] = dp[i][j];
            dp[i+1][j^a[i]] = dp[i][j];
        }
    }
    int cnt=0;
    for(int i=0;i<(1<<15);i++){
        if(dp[n][i] != 0)cnt++;
    }
    cout << cnt << endl;
    return 0;
}