#include <bits/stdc++.h>
using namespace std;
int main() {
  ios_base::sync_with_stdio(false);
  cin.tie(0);
  long long int n, x1, x2, y1, y2;
  cin >> n >> x1 >> y1 >> x2 >> y2;
  if ((x1 - y1) * (x2 - y2) >= 0)
    cout << abs(x1 - x2) + abs(y1 - y2);
  else
    cout << (((x1 + x2 + y1 + y2) > (4 * n - x1 - x2 - y1 - y2))
                 ? (4 * n - x1 - x2 - y1 - y2)
                 : (x1 + x2 + y1 + y2));
  return 0;
}
