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(require '[clojure.string :as str])
(def input (->> (slurp "./in")
(str/split-lines)
(split-with not-empty)
((juxt
(fn [lst]
(reduce
#(conj %1 (mapv read-string (str/split %2 #",")))
#{} (first lst)))
(fn [lst]
(->> (second lst)
(drop 1)
(map #(-> %
(str/split #"=")
(update 0 (comp {\x 0 \y 1} last))
(update 1 read-string)))
(first)
))))))
(defn fold-point [idx chg pt]
(cond-> pt (> (get pt idx) chg) (update idx #(- % (* 2 (- % chg))))))
(let [instruction (second input)]
(->> (first input)
(map (partial fold-point (first instruction) (second instruction)))
(distinct)
(count)
(println)))
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