#include <bits/stdc++.h>
#include <atcoder/math>
using namespace std;

int main()
{
    int N;
    cin >> N;
    vector<int> A(N);
    for (int &a : A)
        cin >> a;
    vector<vector<int>> V(N);
    for (int i = 0; i < N; i++)
        for (int j = 0; j < N; j++)
        {
            int k = A[j] ^ A[i];
            if (k == (k & (-k)) && k != 0)
                V[i].push_back(j);
        }
    vector<bool> vis(N);

    int c1 = 0, c2 = 0, ans = 0;
    function<void(int, bool)> dfs = [&](int x, bool p)
    {
        if (vis[x])
            return;
        vis[x] = 1;
        if (p)
            ++c1;
        else
            ++c2;
        for (auto y : V[x])
            dfs(y, !p);
    };

    for (int i = 0; i < N; i++)
        if (!vis[i])
        {
            dfs(i, 0);
            ans += max(c1, c2);
            c1 = c2 = 0;
        }

    cout << ans << endl;
}