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

void fast_io() {
	ios_base::sync_with_stdio(false);
	cin.tie(nullptr);
}

int main() {
	fast_io();
	int n;
	cin >> n;
	int ax, ay, bx, by, cx, cy;
	cin >> ax >> ay >> bx >> by >> cx >> cy;
	vector<pair<int, int>> ans;
	for (int di = -1; di <= 1; di += 2) {
		for (int dj = -1; dj <= 1; dj += 2) {
			int x = cx + di;
			int y = cy + dj;
			if (x >= 1 && x <= n && y >= 1 && y <= n) {
				ans.push_back({x, y});
			}
		}
	}
	cout << ans.size() << '\n';
	for (auto [x, y] : ans) {
		cout << x << ' ' << y << '\n';
	}
}