names=['xiaoxiao','qijing','mengmeng']

'''for name in names:

print('Hello,'+name.title())

for i  in range(2):

print('Invite '+names[i].title()+' to dinner')

print(names[2]+"  can't come")

names[2]='gaopc'

print(names)

for i in range(3):

print('Invite '+names[i].title()+' to dinner')

names.insert(0,'gaogao')

names.insert(1,'pengpeng')

names.append('chengcheng')

print(names)

for name  in names:

print('Hello,'+name+'  come  on')

while len(names)>2:

name=names.pop()

print('Sorry cannot invite      '+name)

'''