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

typedef long long ll;
typedef long double ld;
#define int ll
#define double ld
#define _FastIO ios_base::sync_with_stdio(0); cin.tie(0); cout.tie(0)
#define pii pair<int , int>
#define pb emplace_back
//#define endl '\n'
#define all(x) x.begin() , x.end()
#define rall(x) x.rbegin() , x.rend()
#define F first
#define S second
const int mod = 1e9 + 7;
const int MAXX = 1e5 + 5;
const int N = 1e5;

char a , b , c;


signed main()
{
    _FastIO;
//  freopen("input.txt", "r", stdin);
//	freopen("output.txt", "w", stdout);
    cout << "6" << endl;
    cout << "-3 4" << endl;
    cout << "-3 1" << endl;
    cout << "0 0" << endl;
    cout << "3 1" << endl;
    cout << "3 4" << endl;
    cout << "0 5" << endl;
    return 0;
}