#include <bits/stdc++.h>
using namespace std;
using ll = long long;
const int INF = 1e9 + 10;
const ll INFL = 4e18;

int main() {
    int N;
    cin >> N;
    int ax, ay, bx, by, cx, cy;
    cin >> ax >> ay >> bx >> by >> cx >> cy;

    vector<pair<int, int>> ans;
    for (auto [dx, dy] : {pair{1, 0}, {0, 1}, {0, -1}, {-1, 0}}) {
        int x = cx + dx;
        int y = cy + dy;

        if (x > N || x < 1 || y > N || y < 1) continue;
        ans.push_back({x, y});
    }

    cout << ans.size() << endl;
    for (auto [x, y] : ans) {
        cout << x << ' ' << y << endl;
    }
}