$ cat ./coding/428-serialize-and-deserialize-n-ary-tree.md
[Coding]
428. Serialize and Deserialize N-ary Tree
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--tags#Tree
$ ls ./coding/ | grep -v 428-serialize-and-deserialize-n-ary-tree
$ cat ./coding/428-serialize-and-deserialize-n-ary-tree.md
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$ ls ./coding/ | grep -v 428-serialize-and-deserialize-n-ary-tree