#include <bits/stdc++.h>

int main(){
    std::cin.tie(nullptr);
    std::ios::sync_with_stdio(false);

    int N;
    std::cin >> N;

    int ax, ay, bx, by, cx, cy;
    std::cin >> ax >> ay >> bx >> by >> cx >> cy;

    int M = 4;
    std::cout << M << std::endl;

    const int dx[] = {-1, 1, 0, 0}, dy[] = {0, 0, -1, 1};
    for(int i=0;i<4;i++){
        int x = cx + dx[i], y = cy + dy[i];
        std::cout << x << " " << y << std::endl;
    }
}