\--- Day 4: High-Entropy Passphrases ---
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A new system policy has been put in place that requires all accounts to use a *passphrase* instead of simply a pass*word*. A passphrase consists of a series of words (lowercase letters) separated by spaces.

To ensure security, a valid passphrase must contain no duplicate words.

For example:

* `aa bb cc dd ee` is valid.
* `aa bb cc dd aa` is not valid - the word `aa` appears more than once.
* `aa bb cc dd aaa` is valid - `aa` and `aaa` count as different words.

The system's full passphrase list is available as your puzzle input. *How many passphrases are valid?*

Your puzzle answer was `337`.

\--- Part Two ---
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For added security, yet another system policy has been put in place. Now, a valid passphrase must contain no two words that are anagrams of each other - that is, a passphrase is invalid if any word's letters can be rearranged to form any other word in the passphrase.

For example:

* `abcde fghij` is a valid passphrase.
* `abcde xyz ecdab` is not valid - the letters from the third word can be rearranged to form the first word.
* `a ab abc abd abf abj` is a valid passphrase, because *all* letters need to be used when forming another word.
* `iiii oiii ooii oooi oooo` is valid.
* `oiii ioii iioi iiio` is not valid - any of these words can be rearranged to form any other word.

Under this new system policy, *how many passphrases are valid?*

Your puzzle answer was `231`.

Both parts of this puzzle are complete! They provide two gold stars: \*\*

At this point, all that is left is for you to [admire your Advent calendar](/2017).

If you still want to see it, you can [get your puzzle input](4/input).