#include <bits/stdc++.h>
using namespace std;
int main() {
  int n, x1, y1, x2, y2;
  cin >> n >> x1 >> y1 >> x2 >> y2;
  if ((x1 >= y1 && x2 >= y2) || (x1 <= y1 && x2 <= y2)) {
    int ans = abs(x1 - x2) + abs(y1 - y2);
    cout << ans;
  } else {
    int ans = min((x1 + x2 + y1 + y2), (4 * n - x1 - x2 - y1 - y2));
    cout << ans;
  }
  return 0;
}
