#include <bits/stdc++.h>
using namespace std;
int main() {
  int n;
  cin >> n;
  vector<long long> a(n);
  for (int i = 0; i < n; i++) {
    cin >> a.at(i);
  }
  long long answer = 0;
  for (int i = 0; i < n - 1; i++) {
    for (int j = i + 1; j < n; j++) {
      answer = (answer + ((a.at(i) ^ a.at(j)) % (1000000007))) % (1000000007);
    }
  }
  cout << answer << endl;
}
