#include <bits/stdc++.h>
using namespace std;

int main() {
  int N;
  int cx, cy;
  cin >> N >> cx >> cy >> cx >> cy >> cx >> cy;
  vector<pair<int, int>> ans;
  if(cx - 1 >= 1) ans.push_back(make_pair(cx - 1, cy));
  if(cx + 1 <= N) ans.push_back(make_pair(cx + 1, cy));
  if(cy - 1 >= 1) ans.push_back(make_pair(cx, cy - 1));
  if(cy + 1 <= N) ans.push_back(make_pair(cx, cy + 1));
  cout << ans.size() << endl;
  for(const auto &[x, y] : ans) cout << x << " " << y << endl;
}