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

#name = raw_input('Please enter your name: \n')
#print 'Welcome : %s !' % name

#name = ''
#while not name:
#    name = raw_input('Please enter your name: \n')
#    
#    print 'Welcome : %s!' % name

#a = 0
#b = 20
#while a < b - 1:
#    a += 1
#    print a

#l = ["php","java","c","python"]
#
#
#
#if 'java' in l:
#    print 'I found it'
#a = 'java' in l


#l = ["php","java","c","python"]
#
#l[1] = 'haha'
#
#print l
#
#if 'java' not in l:
#    print 'not found'

#height = input('what\'s your height?')
#
#if height >= 1.5:
#    print 'pay me 2 RMB'
#else:
#    print 'free to go'

#a = 0
#
#b = 20
#
#print range(1,20)
#
#for i in range(a,b):
#    print id

#H = {"name":"xiaoming", "age":"25", "address":"Beijing", "phone":"13008565432"}
#
#a = H.keys()
#
#print a[::2]
#
#print a

#H = {"name":"xiaoming", "age":"25", "address":"Beijing", "phone":"13008565432"}
#
#
#a = H.items()
#
#print a
#
#print a[::3]
#
#print dict(a[::3])

#matrix = [
#[1, 2, 3, 4],
#[5, 6, 7, 8],
#[9, 10, 11, 12],
#]
#print matrix

#userinfo = raw_input('Please enter your name, age and address: ')
#
#info = tuple(userinfo.split(','))
#
#print 'My name is %s, %s years old, and I like %s' % info


#x = 858    
#y = 668
#
#if not x < = 0:
#    print y
    
#a = 123 
#b = 234
#
#if not b <= a:
#    print "b > a"

for i in range(1,20):
    print i
#
#for i in xrange(1,20):
#    print i
    