#include <stdio.h>
#include <iostream.h>

main() {
  cout << "800000\n";
  int a,b;
  for (int i=0; i<800000; i++) {
    a = (a*b+7) % 1000;
    b = (b+a+9) % 10000;
    cout << a + 1 << " " << b + 1 << "\n"; 
  }
}