                                           Advent of Code

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--- Day 2: I Was Told There Would Be No Math ---

   The elves are running low on wrapping paper, and so they need to submit an order for more. They
   have a list of the dimensions (length l, width w, and height h) of each present, and only want
   to order exactly as much as they need.

   Fortunately, every present is a box (a perfect right rectangular prism), which makes
   calculating the required wrapping paper for each gift a little easier: find the surface area of
   the box, which is 2*l*w + 2*w*h + 2*h*l. The elves also need a little extra paper for each
   present: the area of the smallest side.

   For example:

     • A present with dimensions 2x3x4 requires 2*6 + 2*12 + 2*8 = 52 square feet of wrapping
       paper plus 6 square feet of slack, for a total of 58 square feet.
     • A present with dimensions 1x1x10 requires 2*1 + 2*10 + 2*10 = 42 square feet of wrapping
       paper plus 1 square foot of slack, for a total of 43 square feet.

   All numbers in the elves' list are in feet. How many total square feet of wrapping paper should
   they order?

   Your puzzle answer was 1588178.

--- Part Two ---

   The elves are also running low on ribbon. Ribbon is all the same width, so they only have to
   worry about the length they need to order, which they would again like to be exact.

   The ribbon required to wrap a present is the shortest distance around its sides, or the
   smallest perimeter of any one face. Each present also requires a bow made out of ribbon as
   well; the feet of ribbon required for the perfect bow is equal to the cubic feet of volume of
   the present. Don't ask how they tie the bow, though; they'll never tell.

   For example:

     • A present with dimensions 2x3x4 requires 2+2+3+3 = 10 feet of ribbon to wrap the present
       plus 2*3*4 = 24 feet of ribbon for the bow, for a total of 34 feet.
     • A present with dimensions 1x1x10 requires 1+1+1+1 = 4 feet of ribbon to wrap the present
       plus 1*1*10 = 10 feet of ribbon for the bow, for a total of 14 feet.

   How many total feet of ribbon should they order?

   Your puzzle answer was 3783758.

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

   At this point, you should return to your advent calendar and try another puzzle.

   If you still want to see it, you can get your puzzle input.

   You can also [Shareon Twitter Google+ Reddit] this puzzle.

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