#include <bits/stdc++.h>
#pragma GCC optimize("Ofast")
#pragma GCC optimize("unroll-loops")
using namespace std;
int dx[4] = {-1, 0, 1, 0};
int dy[4] = {0, -1, 0, 1};
int main() {
  cin.tie(0); cout.tie(0);
  ios::sync_with_stdio(false);
  int N;
  cin >> N;
  int ax, ay;
  cin >> ax >> ay;
  int bx, by;
  cin >> bx >> by;
  int cx, cy;
  cin >> cx >> cy;
  vector<int> X, Y;
  for(int k = 0; k < 4; k++) {
    int nx = cx + dx[k];
    int ny = cy + dy[k];
    if(nx <= 0 || nx > N || ny <= 0 || ny > N) {
      continue;
    }
    X.emplace_back(nx);
    Y.emplace_back(ny);
  }
  int M = X.size();
  cout << M << '\n';
  for(int i = 0; i < M; i++) {
    cout << X[i] << ' ' << Y[i] << '\n';
  }
  return 0;
}