aoc

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(ns aoc.day06
  (:require [clojure.java.io :as io]))

(def example "abc

a
b
c

ab
ac

a
a
a
a

b")

(defn group-said-yes [group]
  (apply clojure.set/union
         (map set group)))

(defn group-all-said-yes [group]
  (apply clojure.set/intersection
         (map set group)))

;; ----

(defn read-input []
  (->> (clojure.string/split (slurp (io/resource "input06.txt")) #"\n\n")
       (map clojure.string/split-lines)))

(defn compute-1 [input]
  (->> input
       (map group-said-yes)
       (map count)
       (apply +))
  )

(defn compute-2 [input]
  (->> input
       (map group-all-said-yes)
       (map count)
       (apply +)))

(defn main []
  (let [input (read-input)]
    (println (compute-1 input))
    (println (compute-2 input))))

(main)