#include <bits/stdc++.h>
using namespace std;
int main() {
  int n;
  int a[100000] = {0};
  int ans = 0;
  cin >> n;
  for (int i = 0; i < n; i++) cin >> a[i];
  sort(a, a + n);
  for (int i = 0; i < n; i++)
    ans = (ans + (a[i] % 10007) * (a[n - 1 - i] % 10007)) % 10007;
  cout << ans;
  return 0;
}
