98 lines
1.7 KiB
Text
98 lines
1.7 KiB
Text
{
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"cells": [
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{
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"cell_type": "code",
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"execution_count": 1,
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"metadata": {},
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"outputs": [],
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"source": [
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"puzzle <- readFile \"05.txt\"\n",
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"plines = lines puzzle\n",
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"\n",
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"int x = read x :: Int"
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]
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},
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{
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"cell_type": "markdown",
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"metadata": {},
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"source": [
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"# Day 05"
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]
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},
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{
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"cell_type": "markdown",
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"metadata": {},
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"source": [
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"### Puzzle 1"
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]
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},
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{
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"cell_type": "code",
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"execution_count": 2,
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"metadata": {},
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"outputs": [
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{
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"data": {
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"text/plain": [
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"938"
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]
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},
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"metadata": {},
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"output_type": "display_data"
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}
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],
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"source": [
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"seat = foldl (\\acc e -> acc * 2 + if e `elem` \"BR\" then 1 else 0) 0\n",
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"foldl max 0 $ map seat plines"
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]
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},
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{
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"cell_type": "markdown",
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"metadata": {},
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"source": [
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"### Puzzle 2"
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]
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},
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{
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"cell_type": "code",
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"execution_count": 3,
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"metadata": {},
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"outputs": [
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{
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"data": {
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"text/plain": [
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"696"
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]
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},
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"metadata": {},
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"output_type": "display_data"
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}
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],
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"source": [
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"import qualified Data.Set as Set\n",
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"\n",
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"let seats = Set.fromList $ map seat plines\n",
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" b = foldl max 0 seats\n",
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" a = foldl min b seats\n",
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" in head . Set.toList $ Set.difference (Set.fromList [a..b]) seats"
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]
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}
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],
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"metadata": {
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"kernelspec": {
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"display_name": "Haskell",
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"language": "haskell",
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"name": "haskell"
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},
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"language_info": {
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"codemirror_mode": "Haskell",
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"file_extension": ".hs",
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"mimetype": "text/x-haskell",
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"name": "haskell",
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"pygments_lexer": "Haskell",
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"version": "8.8.4"
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}
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},
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"nbformat": 4,
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"nbformat_minor": 4
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}
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