Lobsterrr

# Quiz: Prison Labor Dodgers
# ====================

# Commander Lambda is all about efficiency, including using her bunny prisoners for manual labor. But no one's been properly monitoring the labor shifts for a while, and they've gotten quite mixed up. You've been given the task of fixing them, but after you wrote up new shifts, you realized that some prisoners had been transferred to a different block and aren't available for their assigned shifts. And manually sorting through each shift list to compare against prisoner block lists will take forever - remember, Commander Lambda loves efficiency!

# Given two almost identical lists of prisoner IDs x and y where one of the lists contains an additional ID, write a function answer(x, y) that compares the lists and returns the additional ID.

# For example, given the lists x = [13, 5, 6, 2, 5] and y = [5, 2, 5, 13], the function answer(x, y) would return 6 because the list x contains the integer 6 and the list y doesn't. Given the lists x = [14, 27, 1, 4, 2, 50,