2020 day19/haskell: add solution
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@ -24,5 +24,6 @@ https://adventofcode.com/2020/
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|16 | | `**` | |
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|17 | | | |
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|18 | | `**` | |
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|19 | | `**` | |
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`test.sh` can be used to run all solutions and automatically compares them to (my) puzzle inputs and the expected outputs.
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2
2020/data/day19.expected
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2
2020/data/day19.expected
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@ -0,0 +1,2 @@
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465
2020/data/day19.input
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465
2020/data/day19.input
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@ -0,0 +1,465 @@
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90: 86 86
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122: 86 1 | 99 20
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116: 86 58 | 99 75
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20: 86 123
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62: 99 95 | 86 113
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81: 76 99 | 90 86
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106: 120 86 | 93 99
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73: 99 72 | 86 45
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117: 131 99 | 72 86
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92: 86 96 | 99 98
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13: 3 99 | 118 86
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85: 72 99 | 51 86
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51: 99 99 | 86 86
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59: 99 25 | 86 62
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112: 86 13 | 99 38
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46: 33 86 | 2 99
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33: 120 99 | 76 86
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38: 35 86 | 125 99
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1: 33 99 | 60 86
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8: 42
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16: 51 86 | 93 99
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107: 40 99 | 2 86
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40: 17 120
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34: 86 82 | 99 127
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88: 93 17
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2: 99 51 | 86 120
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32: 100 99 | 7 86
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113: 86 127 | 99 82
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14: 73 86 | 44 99
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25: 86 101 | 99 56
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130: 110 86 | 109 99
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27: 17 86 | 86 99
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105: 130 86 | 32 99
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71: 120 99 | 131 86
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12: 99 131 | 86 82
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60: 72 86 | 93 99
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84: 86 102 | 99 80
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44: 99 76 | 86 72
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125: 76 99 | 131 86
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18: 99 71 | 86 52
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129: 37 86 | 111 99
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102: 99 131 | 86 76
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66: 86 105 | 99 41
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99: "a"
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9: 99 18 | 86 65
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39: 76 99 | 93 86
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64: 115 99 | 114 86
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35: 72 86 | 51 99
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0: 8 11
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77: 86 83 | 99 106
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118: 72 86 | 75 99
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47: 99 103 | 86 85
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23: 99 27 | 86 76
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48: 119 99 | 78 86
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49: 86 51 | 99 45
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67: 86 120
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61: 86 72 | 99 127
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108: 72 99 | 72 86
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95: 86 58 | 99 90
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83: 86 27 | 99 131
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75: 86 99 | 99 99
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101: 51 99 | 27 86
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103: 90 99 | 90 86
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128: 86 69 | 99 33
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70: 99 14 | 86 19
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52: 127 86 | 90 99
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21: 86 24 | 99 59
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22: 86 63 | 99 12
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42: 79 86 | 66 99
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97: 51 17
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104: 86 33 | 99 28
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100: 99 16 | 86 39
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72: 99 86
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78: 86 43 | 99 50
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55: 86 6 | 99 34
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45: 99 99
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5: 86 46 | 99 77
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6: 131 99 | 51 86
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110: 71 86 | 28 99
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68: 90 86 | 27 99
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29: 87 86 | 122 99
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80: 86 93 | 99 131
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54: 120 86 | 75 99
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43: 93 86
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98: 99 103 | 86 117
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7: 101 86 | 88 99
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127: 17 86 | 99 99
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96: 86 12 | 99 61
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41: 99 5 | 86 112
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79: 86 57 | 99 21
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11: 42 31
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86: "b"
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111: 45 99 | 72 86
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63: 76 99 | 127 86
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124: 86 81 | 99 116
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28: 86 75 | 99 58
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82: 99 86 | 86 99
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121: 64 86 | 74 99
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87: 86 124 | 99 104
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74: 99 26 | 86 9
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31: 126 99 | 121 86
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50: 99 72
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119: 34 86 | 36 99
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36: 86 82 | 99 75
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91: 86 131
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3: 58 99 | 27 86
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114: 99 129 | 86 22
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69: 27 17
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37: 99 58
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123: 86 76 | 99 82
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baababbbbaaaabbabbaabbbbbbbbbaaabbbbaaba
|
||||
aabbaababaaaabaabaabbaba
|
||||
bbbabbaababaabaaabbbaaaaabaaaabaaabaaababababaaabbababbbbbbbabba
|
||||
bbabaabaabaaabaabbabbaab
|
||||
aabaaaaaaaababbbaaababbbbbbaabab
|
||||
baaaabaaabbbabbbabaaababbaabbaaa
|
||||
baabbbbabababbbaaababbbabbabbbbabbaabbbaabbabababaaabababaabaabbbabbabba
|
||||
baabaabaabababaabaaaabbb
|
||||
abbaabbbbabaabaaababbababaabbabbbabbbbabbbbbaabababbaabb
|
||||
abbbabbbbbbababaabbbabbabbbbbaab
|
||||
abaaabbbbbbaabbbaabbaaab
|
||||
ababbbabbbabbbaaabaaabaababababa
|
||||
bbbbbbaaabbbaaaaaaabbabaabbbbaabbbbaaaab
|
||||
bababbbbbabbbbbbbaabbbbbbbababbbbabbabbbabbbbaabbaaaabba
|
||||
baaabbaaaaaaaababaaabbbaabaabaaabaabababaaabbaaaabbaabaa
|
||||
aabbaabbbbbabaababaabaaaababbaaabbabbababbbbaabb
|
||||
abbbbbaabbbabbbbbbbbaaba
|
||||
aaabbabbbbbabbbababaaabb
|
||||
abaabaaaaabbaaaababbbaab
|
||||
aaaabaabbbbbaabababaaaaaaaaaaabb
|
||||
bbbababaabbbabaabaababba
|
||||
abbbaabbabaaababbbbbbabb
|
||||
babbabbbaaaaabbbaababbabbaabbbbbbaaabbaaaabbbbbaabaababbbbaaaaba
|
||||
aaaaaababbbababababaabab
|
||||
bbaabaabbbaaaabbabbababaaaaaababaabaaabb
|
||||
aabbabaababaaaababbbabab
|
||||
ababbbababaabbbbbaaaabbbbbbbbaababbbbaaabbabbbaaabbbabbbbaaaabbbaaaaaaaaababaaab
|
||||
bbbabaabaaaaabbaaaabaabb
|
||||
babbaaabbaabaababbbbaaba
|
||||
bbabaabababbbbbaabaabaaabbaaabbabbbabaaa
|
||||
abbabaabbaaaabaabbbaaaba
|
||||
aabbabaabaaabbbaaaabbbabbabababbbbbaabbb
|
||||
aabbbbbbabababababbbbbab
|
||||
abbabbbabbabaababaaabbbb
|
||||
baaabbaaababbaaabaabaabb
|
||||
bbbabbbaaaabaaaaabaaababaaaabbbbaabbaaaaabbbabab
|
||||
aabbbabaaaababaabaaaaaba
|
||||
abbbabbbababbabbbbaabbaa
|
||||
abbbbbabaabababbbabababa
|
||||
bbaabaabaababbaabababaaa
|
||||
bbabaaabaababbbaaababbbaaaababba
|
||||
abbaabaababbababaaaabbbaabbabaababbbaabaaaabaaabaabbbbab
|
||||
babbbaaabbabbbaababbbbaaaabaababaaaabaaa
|
||||
babababbabaaaabaaabbbabaaabbbabababaaaabbbabbaab
|
||||
aabbbaababbaaabaababbaababaaabbbaaaaaabaababbaaaaabaaabbbbababaa
|
||||
abbbabbbaaabbbbaaabaabab
|
||||
abaabbaaaabbaabbbbbaaaaa
|
||||
bbabaaabaaaabbbbaabbbaaaaabbbbbbabbbbbbabbbabaaa
|
||||
bbbabbaababbbbbabbaaaaabbabaabaaababaababaaaaabb
|
||||
abbbabbbababbaaabbabaaaaabbabbbabbabaabbbaaaaabbabbabaaabbbbbbbb
|
||||
bababbbaaaabaabaabbababb
|
||||
abbbbbbbabababaaabbaababbabaaababbaaaaaa
|
||||
abbaabbbabaaaaabaaaaabbaabaaaaabababbbababbbabab
|
||||
abbabbbbbbabaaaabbbabbbabbbbaaba
|
||||
abbaabbbbaabaababaababba
|
||||
bbabaaababaabbbaaaaaabbb
|
||||
baabbabaaaaabbabaabbbbabbabbabbabbaaaaaa
|
||||
babbbbbbababbababbabbbabaabbaaab
|
||||
aaabaaabbbbabbbbaabbabbbbaaaaaabaabbbaabbaababaa
|
||||
baabbbbbaaabaababababbab
|
||||
babbaaabaaaabaababbabbaaaabaabaa
|
||||
abaabbbbbbabaaaaaabaabab
|
||||
aaaaabbaabababaabbbbbababbbababbbbaababb
|
||||
abababababaabaaabbaaababbabbabbb
|
||||
abaaaaabbbbbbabaaaaabbaa
|
||||
aaaabbbbbbbbababbbabaabb
|
||||
bbabbabaabaaabaaaaababab
|
||||
aaabbbbbabbabbbbbabaababbbaabaababbababb
|
||||
bbabaabaabbabbaaaabaabba
|
||||
abbabaaababbaabaaaaabbbabbaaaaabbbaabbabbababaaabaabbaabbbbaaabaaaabbbaabbbbabba
|
||||
ababbbabaaabbabbaaabbabaaabaabba
|
||||
bbbabbbbbabbbbbbabaaabaaaaababbbbababaaa
|
||||
babbabaaabbaaabbabbabaaa
|
||||
babbbbaaabbbbbaaabaaabaabbbbababbaaababb
|
||||
abbabbbbabababbbbbabbaaabaaababb
|
||||
babbababbbaababaabbabbab
|
||||
bbaaababbbbbaaababbbbabb
|
||||
baaaabaababaabbbabaabbbaaabbbaabaaaabbab
|
||||
abbaabbbbbaaaaabbbaabbabbaabbaab
|
||||
aaaaaababbaababaaabaaabababbbabb
|
||||
baaabbaabbbababaaababbbaaaaaabba
|
||||
bbbbabaaaaabaaaaaaababbaaaababbbbbaabaaaaabaaaabaaaabbaabbbbbbbb
|
||||
abaaabbbbaaabaaababbabba
|
||||
aaaaabaaaaabbbaabbabaaaaabababaaabbbbbaabbaaaaba
|
||||
ababbabababbbaaaaaaaabbb
|
||||
aaababaaabaabbaababbabbb
|
||||
ababababaabbbabbbaaabaab
|
||||
baabbbabbaaabaaabaaabbbabbabbabb
|
||||
bbbabbaabbabbababaabbbbaabaabbabaabaaabbbaaabbbb
|
||||
aaabbbabaaabbbbbabbabbbbbbbaaaaa
|
||||
aaabbababbaaababaaaabbaa
|
||||
bbbabbaaababbbabaaabaabb
|
||||
baababbabbbabaaababaaababababbaaaababaabbbbaaaabbabaaababbbabaababbabbbbbaaabbab
|
||||
bbbabbaababaabbabbbbbaaa
|
||||
abababaabaaaabaaabababbbbaababbbbbabbaaaaaabbaabbbbabababbabaabb
|
||||
babbbababaaabbbabaababbbaaabababaaaababbbabbaabbabaabbba
|
||||
bbbabbaabaabbbbaaaaaabaabaaabbab
|
||||
bbbabbbbaabbaabaaaaabbbbbaabbabbabbaabaababbaabbaaabbaaa
|
||||
aaababbbbaaaabaaabbabbbbabbbbaba
|
||||
aaaaabbababaabbabaaaaaaaaaaaaababbbbbbaaababbaaaaabaabab
|
||||
babbababbaaabbabbabbaaaabbaabaabbaaabbab
|
||||
45
2020/day19/day19.hs
Normal file
45
2020/day19/day19.hs
Normal file
|
|
@ -0,0 +1,45 @@
|
|||
module Day19 where
|
||||
|
||||
import AoC
|
||||
|
||||
import Control.Applicative
|
||||
import Data.Char
|
||||
import Data.Foldable
|
||||
import Data.Map (Map, (!))
|
||||
import qualified Data.Map as M
|
||||
import Data.Maybe
|
||||
import Data.Tuple
|
||||
import Text.ParserCombinators.ReadP
|
||||
import Text.Read.Lex
|
||||
|
||||
data RuleElement = Literal String | Reference Int
|
||||
|
||||
parseElement :: ReadP RuleElement
|
||||
parseElement = parseRef <|> parseLit
|
||||
where parseRef = Reference <$> readDecP
|
||||
parseLit = Literal <$> between (char '"') (char '"') (many1 $ satisfy isAlphaNum)
|
||||
|
||||
parseRule :: ReadP (Int, [[RuleElement]])
|
||||
parseRule = do ruleNum <- readDecP
|
||||
string ": "
|
||||
alternatives <- parseAlternatives
|
||||
return (ruleNum, alternatives)
|
||||
where parseAlternatives = parseSequence `sepBy` string " | "
|
||||
parseSequence = parseElement `sepBy` char ' '
|
||||
|
||||
buildParser :: Map Int [[RuleElement]] -> Int -> ReadP String
|
||||
buildParser m i = buildAlternatives $ m ! i
|
||||
where buildAlternatives = asum . map buildSequence
|
||||
buildSequence = foldl1 (liftA2 (++)) . map buildElement
|
||||
buildElement (Literal s) = string s
|
||||
buildElement (Reference j) = buildParser m j
|
||||
|
||||
countRootMatches :: [String] -> Map Int [[RuleElement]] -> Int
|
||||
countRootMatches input rules = length . filter (isJust . oneCompleteResult rootParser) $ input
|
||||
where rootParser = buildParser rules 0
|
||||
|
||||
main = runAoC splitInput run (run . withExtraRules)
|
||||
where splitInput = swap . fmap tail . break (=="") . lines
|
||||
withExtraRules = fmap (++ ["8: 42 | 42 8", "11: 42 31 | 42 11 31"])
|
||||
run = uncurry countRootMatches . fmap parseRules
|
||||
parseRules = M.fromList . map (fromJust . oneCompleteResult parseRule)
|
||||
Loading…
Reference in a new issue