text: # -*- coding: utf-8 -*-
  """
  Created on Wed Mar 17 13:22:40 2021
  
  @author: yaser
  """
  from time import time
  def feb(num):
      t1 = time()
      s = 0 
      x = 1
      for i in range(num):
          f = s
          s = x
          x = f + x
          print(f"{i} => {f}")
      t2 = time()
      return f"Tooks {t2-t1}s"
  
  