#include <iostream>
#include <complex>
#include <vector>
using namespace std;
using ll=long long;

using Point_i=complex<ll>;

const ll n=44719;
const ll m=999961558;

int main(){
  Point_i p=Point_i(0,-m);
  ll dx=n;
  ll dy=1;
  vector<Point_i> ans;
  ans.reserve(1000000);
  //ans.push_back(p);
  // 第4象限
  while(dx>0){
    p=Point_i(p.real()+dx,p.imag()+dy);
    ans.push_back(p);
    dx--;
  }
  dx=1;
  dy=2;
  while(dy<=n){
    p=Point_i(p.real()+dx,p.imag()+dy);
    ans.push_back(p);
    dy++;
  }
  // 第1象限
  dx=1;
  dy=n;
  while(dy>0){
    p=Point_i(p.real()-dx,p.imag()+dy);
    ans.push_back(p);
    dy--;
  }
  dx=2;
  dy=1;
  while(dx<=n){
    p=Point_i(p.real()-dx,p.imag()+dy);
    ans.push_back(p);
    dx++;
  }
  // 第2象限
  dx=n;
  dy=1;
  while(dx>0){
    p=Point_i(p.real()-dx,p.imag()-dy);
    ans.push_back(p);
    dx--;
  }
  dx=1;
  dy=2;
  while(dy<=n){
    p=Point_i(p.real()-dx,p.imag()-dy);
    ans.push_back(p);
    dy++;
  }
  // 第3象限
  dx=1;
  dy=n;
  while(dy>0){
    p=Point_i(p.real()+dx,p.imag()-dy);
    ans.push_back(p);
    dy--;
  }
  dx=2;
  dy=1;
  while(dx<=n){
    p=Point_i(p.real()+dx,p.imag()-dy);
    ans.push_back(p);
    dx++;
  }
  ll N;
  N=ans.size();
  cout<<N<<endl;
  for(ll i=0;i<N;i++){
    cout<<ans[i].real()<<" "<<ans[i].imag()<<endl;
  }
}