I am back

$2019.12.19$ After change my Drafts this is the first time I opened my own blog
a little bit rusty but fortunately had nothing before their own learning what not also forget to mention
filling it Regardless of whether the teacher let me learn from the beginning of school or continue to update my own one, the
most important thing is to

fuck Laozi's red name! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! !

It doesn’t matter what name or color, you can go up again.
What makes me most happy is
that the first question today is directly $AC$ succeeded in seamless connection, a
happy day of fried chicken, duck hehehe,
wait for me to update$Trie$ tree blog