num = input('What is your num?\n')
print('Num is: %s' % num)
num = int(num)
eps = 0.0000001
lo = 0
hi = num
while True:
  print('%s %s' % (hi, lo))
  if (hi - lo) < eps:
    break
  sqr = (hi + lo) / 2
  v = sqr * sqr
  if v > num:
    hi = sqr
  elif v < num:
    lo = sqr
  else:
    break

print('Sqr is: %s' % sqr)