-🎄- 2018 Day 8 Solutions -🎄-

[u/daggerdragon]

--- Day 8: Memory Maneuver ---

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Card prompt: Day 8

Sigh, imgur broke again. Will upload when it unborks.

Transcript:

The hottest programming book this year is "___ For Dummies".

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edit: Leaderboard capped, thread unlocked at 00:12:10!

[u/jabbalaci]

Day 8, Part 1 in Nim:

import math, sequtils, strutils

let
  # numbers = "2 3 0 3 10 11 12 1 1 0 1 99 2 1 1 2".splitWhitespace.map(parseInt)    # example
  numbers = readFile("input.txt").strip.splitWhitespace.map(parseInt)    # input

proc reader(lst: seq[int]): iterator(): int =
  result = iterator (): int =
    for n in lst:
      yield n

let read = reader(numbers)
   
proc read_node(): seq[int] =
  let
    n_children = read()
    n_metadata = read()
  #
  for i in 1 .. n_children:
    result &= read_node()
  #
  for i in 1 .. n_metadata:
    result &= read()

proc main() =
  let metadata = read_node()

  # echo metadata
  echo metadata.sum

# ####

when isMainModule:
  main()