2022 day 8: Bash parts 1 & 2

2022/day08/README.org

@@ -53,4 +53,70 @@ a total of =21= trees are visible in this arrangement.
 
 Consider your map; /how many trees are visible from outside the grid?/
 
-To begin, [[file:8/input][get your puzzle input]].
+Your puzzle answer was =1698=.
+
+** --- Part Two ---
+Content with the amount of tree cover available, the Elves just need to
+know the best spot to build their tree house: they would like to be able
+to see a lot of /trees/.
+
+To measure the viewing distance from a given tree, look up, down, left,
+and right from that tree; stop if you reach an edge or at the first tree
+that is the same height or taller than the tree under consideration. (If
+a tree is right on the edge, at least one of its viewing distances will
+be zero.)
+
+The Elves don't care about distant trees taller than those found by the
+rules above; the proposed tree house has large
+[[https://en.wikipedia.org/wiki/Eaves][eaves]] to keep it dry, so they
+wouldn't be able to see higher than the tree house anyway.
+
+In the example above, consider the middle =5= in the second row:
+
+#+begin_example
+30373
+25512
+65332
+33549
+35390
+#+end_example
+
+- Looking up, its view is not blocked; it can see =1= tree (of height
+  =3=).
+- Looking left, its view is blocked immediately; it can see only =1=
+  tree (of height =5=, right next to it).
+- Looking right, its view is not blocked; it can see =2= trees.
+- Looking down, its view is blocked eventually; it can see =2= trees
+  (one of height =3=, then the tree of height =5= that blocks its view).
+
+A tree's /scenic score/ is found by /multiplying together/ its viewing
+distance in each of the four directions. For this tree, this is =4=
+(found by multiplying =1 * 1 * 2 * 2=).
+
+However, you can do even better: consider the tree of height =5= in the
+middle of the fourth row:
+
+#+begin_example
+30373
+25512
+65332
+33549
+35390
+#+end_example
+
+- Looking up, its view is blocked at =2= trees (by another tree with a
+  height of =5=).
+- Looking left, its view is not blocked; it can see =2= trees.
+- Looking down, its view is also not blocked; it can see =1= tree.
+- Looking right, its view is blocked at =2= trees (by a massive tree of
+  height =9=).
+
+This tree's scenic score is =8= (=2 * 2 * 1 * 2=); this is the ideal
+spot for the tree house.
+
+Consider each tree on your map. /What is the highest scenic score
+possible for any tree?/
+
+Your puzzle answer was =672280=.
+
+Both parts of this puzzle are complete! They provide two gold stars: **