#include <iostream>
#include <vector>
using namespace std;

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

    unsigned long long ret = 0;

    for (int d = 27; d >= 0; --d, ret *= 2) {
        int last = 0;
        for (int i = 0; i < N; ++i) {
            if ((A[i] >> d) & 1) last = i + 1;
            ret += last;
        }
    }

    cout << ret / 2 << endl;
}