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

int main() {
    cout << 1000000 << endl;
    for(int i = 0; i < 1000000; i++) {
        if(i%2 == 0) {
            cout << i << " " << 1 << endl;
        }
        else {
            cout << i << " " << 0 << endl;
        }
    }
}