Define a function plan_potions that consumes a MonsterMash and produces a list of integers representing the total amount of time that each Potion will take to brew, multiplied by the number of monsters attending in the head_count. If there are no "movie" kind of Media at the party, though, then you should double that number since they will have less to do.

The file monster_mash.py is in monster_mash.py and in the monster_mash.py tab of the sandbox (To sandbox).