#include <iostream>
#include <cmath>

using namespace std;

int main()
{
  double x = 1.0;
  double tol = 1e-10;
  double dx = 2*tol;
  unsigned int n = 0;

  while (abs(dx) > tol)
  {
    n += 1;
    dx = (x + 2/x) / 2 - x;
    x += dx;
    cout << n << " " << x << endl;
  }

  return 0;
}