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)
'''
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