Bash: 2022/day 4 part 1

2022/day04/README.org

@@ -65,10 +65,26 @@ pairs.
 
 /In how many assignment pairs does one range fully contain the other?/
 
-To begin, [[file:4/input][get your puzzle input]].
+Your puzzle answer was =444=.
+
+The first half of this puzzle is complete! It provides one gold star: *
+
+** --- Part Two ---
+It seems like there is still quite a bit of duplicate work planned.
+Instead, the Elves would like to know the number of pairs that /overlap
+at all/.
+
+In the above example, the first two pairs (=2-4,6-8= and =2-3,4-5=)
+don't overlap, while the remaining four pairs (=5-7,7-9=, =2-8,3-7=,
+=6-6,4-6=, and =2-6,4-8=) do overlap:
+
+- =5-7,7-9= overlaps in a single section, =7=.
+- =2-8,3-7= overlaps all of the sections =3= through =7=.
+- =6-6,4-6= overlaps in a single section, =6=.
+- =2-6,4-8= overlaps in sections =4=, =5=, and =6=.
+
+So, in this example, the number of overlapping assignment pairs is =4=.
+
+/In how many assignment pairs do the ranges overlap?/
 
 Answer:
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