#include<bits/stdc++.h>
#define REP(i,n) for(int i=0,i##_len=(n);i<i##_len;++i)
#define rep(i,a,b) for(int i=int(a);i<int(b);++i)
#define All(x) (x).begin(),(x).end()
using namespace std;
typedef long long ll;

int main(){
    int N;cin>>N;
    vector<int> A(N);
    REP(i, N) cin >> A[i];
    vector<vector<bool>> dp(N+1,vector<bool>((1<<15),false));
    dp[0][0]=true;
    REP(i,N) REP(j,(1<<15)){
        dp[i+1][j] = dp[i][j]||dp[i][j^A[i]];
    }
    int ans=0;
    REP(i,1<<15) if(dp[N][i]){
        ans++;
    }
    cout<<ans<<endl;
}