55 lines
1.7 KiB
Markdown
55 lines
1.7 KiB
Markdown
## \-\-- Day 12: JSAbacusFramework.io \-\--
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Santa\'s Accounting-Elves need help balancing the books after a recent
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order. Unfortunately, their accounting software uses a peculiar storage
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format. That\'s where you come in.
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They have a [JSON](http://json.org/) document which contains a variety
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of things: arrays (`[1,2,3]`), objects (`{"a":1, "b":2}`), numbers, and
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strings. Your first job is to simply find all of the *numbers*
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throughout the document and add them together.
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For example:
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- `[1,2,3]` and `{"a":2,"b":4}` both have a sum of `6`.
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- `[[[3]]]` and `{"a":{"b":4},"c":-1}` both have a sum of `3`.
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- `{"a":[-1,1]}` and `[-1,{"a":1}]` both have a sum of `0`.
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- `[]` and `{}` both have a sum of `0`.
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You will not
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encounter
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any strings containing numbers.
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What is the *sum of all numbers* in the document?
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Your puzzle answer was `191164`.
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## \-\-- Part Two \-\-- {#part2}
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Uh oh - the Accounting-Elves have realized that they double-counted
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everything *red*.
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Ignore any object (and all of its children) which has any property with
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the value `"red"`. Do this only for objects (`{...}`), not arrays
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(`[...]`).
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- `[1,2,3]` still has a sum of `6`.
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- `[1,{"c":"red","b":2},3]` now has a sum of `4`, because the middle
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object is ignored.
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- `{"d":"red","e":[1,2,3,4],"f":5}` now has a sum of `0`, because the
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entire structure is ignored.
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- `[1,"red",5]` has a sum of `6`, because `"red"` in an array has no
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effect.
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Your puzzle answer was `87842`.
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Both parts of this puzzle are complete! They provide two gold stars:
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\*\*
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At this point, you should [return to your Advent calendar](/2015) and
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try another puzzle.
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If you still want to see it, you can [get your puzzle
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input](12/input).
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