#include <bits/stdc++.h>
using namespace std;
using ll = long long;
#define ALL(v) v.begin(),v.end()
#define dbg(x) cerr << #x << ": " << (x) << endl;
template<class F, class S>
ostream& operator<<(ostream& os, pair<F,S>& p) {
    os << '(' << p.first << ',' << p.second << ')';
    return os;
}
template<class Iter>
void print(Iter beg, Iter end) {
    for (Iter itr = beg; itr != end; ++itr) {
        cerr << *itr << ' ';
    }
    cerr << '\n';
}
inline bool naraba(bool a, bool b) { return (!a || b); }

int N;
vector<pair<int,int>> P(3);

int main() {
    cin >> N;
    for (auto& [x,y] : P) cin >> x >> y;

    int dx[] = {-1,0,1,0,-1};

    cout << 4 << '\n';
    for (int i = 0; i < 4; ++i) {
        int x = P[2].first;
        int y = P[2].second;
        int nx = x + dx[i];
        int ny= y + dx[i+1];
        cout << nx << ' ' << ny << '\n';
    }
}