#!/usr/bin/env python
# -*- coding: utf-8 -*-

#classmates=['Michael','Bob','Tracy']
#classmates.append('Adam')
#classmates.insert(2,'Jack')
#classmates = ('Michael', 'Bob', 'Tracy')
#age=3
#if age>=18:
#    print 'your age is',age
#    print 'adult'
#else:
#    print 'your age is',age
#    print 'teenager'
#sum=0
#for x in range(22):
#	sum=sum+x
#print sum
#birth=int(raw_input('birth:'))
#if birth<2000:
#    print '00前'
#else:
#    print '00后'
##import urllib2
##response = urllib2.urlopen('http://www.baidu.com/')
##html = response.read()
##print html
# 函数参数
##def power(x):
##    return x*x
##def power(x,n=2):
##    s=1
##    while n >0:
##        n=n-1
##        s=s*x
##    return s
##def person(name,age,**kw):
##    print 'name:',name,'age:',age, 'other:',kw
##r = []
##n = 3
##for i in range(n):
##    r.append(L[i])
for (i=0; i<list.length; i++) {
    n = list[i];
}