Advent of Code

As a warmup for this year's Advent of Code, I'm re-reading and posting my solutions to last year's challenges. You can read, run and edit today's solution by following the post link.

Today was again quite an easy one, requiring us to build up a tree of values and operations on those values. Part 1 had us evaluate the root value, and part 2 required us to change the value of a specific node to ensure that both branches below the root node evaluated to the same value. The linear nature of the operations allowed me to just try two different values and then interpolate the correct answer.