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

int main(){
    ios::sync_with_stdio(false);
    cin.tie(0);
    int n;
    cin >> n;
    vector<pair<int,int>> a(3);
    for(auto &&[x, y] : a){
        cin >> x >> y;
    }
    cout << 4 << '\n';
    vector<pair<int,int>> dir = {{0, 1}, {1, 0}, {0, -1}, {-1, 0}};
    for(auto &&[dx, dy] : dir){
        cout << a[2].first + dx << ' ' << a[2].second + dy << '\n';
    }
}