content: #!/usr/bin/env python
  def fib0(): return 0
  
  def fib1(): return 1
  
  s = """def fib{}(): return fib{}() + fib{}()"""
  
  if __name__ == '__main__':
  
      for n in range(2, 10):
         exec(s.format(n, n-1, n-2))
      from functools import lru_cache
      for n in range(10):
     		exec("fib{} = lru_cache(1)(fib{})".format(n, n))
      print(eval("fib9()"))
  
  
  