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(require '[clojure.string :as str])
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(def caves (->> (slurp "./in")
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(str/split-lines)
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(map #(str/split % #"-"))
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(map (partial map str))
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(#(concat % (map reverse %)))
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))
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(defn get-caves-forward [klst]
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(map #(cons (second %) klst)
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(filter
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#(or (< (int (first (second %))) 96)
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(not-any? (partial = (second %)) klst))
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(filter #(= (first %) (first klst)) caves)
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)))
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(loop [lst (get-caves-forward ["start"]) ms '()]
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(let [nxt (->> lst
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(map get-caves-forward)
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(apply concat))
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mtchs (concat ms (filter #(= (first %) "end") nxt))
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nxtlst (filter #(not= (first %) "end") nxt)]
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(if (empty? nxtlst)
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(println (count mtchs))
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(recur nxtlst mtchs))))
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