#!/usr/bin/python
 
from go import *
 
def mylist(lst):
    now = 0
    stop = len(lst)
    while now < stop:
        yield lst[now]
	now += 1
 
 
#@go
def _mylist() :
   for i in ["aa","bb","cc"]:
      print i
   for i in mylist(["aa","bb","cc"]):
      print i
      
def f1(n) :
   return n if n < 2 else \
            f1(n-2) + f1(n-1)
 
#@go
def _f1() : print 32, f1(32)
 
def f(n):
    a, b = 0, 1
    for i in range(0, n):
        a, b = b, a + b
        print a,b
    return a
 
#@go
def _f(): print 10,f(10)
 
def args(*args):
   print args
 
 
 
# prints a tuble:
#  and immutable list (can't change values, can access by index)
#@go
def _args() : print args(1,2,3,4,5)
 
def memo(f):
    memo = {}
    def wrapper(*args):
       if args in memo:
            return memo[args]
       else:
            tmp = f(*args)
	    memo[args] = tmp
	    return tmp
    return wrapper
 
@memo
def f2(n) :
    return n if n < 2 else f2(n-2) + f2(n-1)
  
@go
def _f2() : print 320,f2(320)
 
from sys import argv
 
if len(argv)> 1:
	n = int(argv[1])
	print n, f1(n)