Solution for Day 9

2021-12-09 19:52:34 +00:00
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@@ -93,3 +93,12 @@ The solution for "eight" is:
 There were 476 instances of digits 1, 4, 7, or 8
 The sum of the decoded output values was 1011823
 ```
+
+### Day nine
+
+```sh
+$ ./aoc2021 --nine
+The solution for "nine" is:
+The sum of the risk level of low points is 439
+The product of the three largest basins is 900900
+```