You cannot select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
40 lines
1.0 KiB
Clojure
40 lines
1.0 KiB
Clojure
3 years ago
|
(defonce input (->> (slurp "./in")
|
||
|
|
(clojure.string/split-lines)
|
||
|
|
(map (partial map #(- (int %) 48)))
|
||
|
|
(atom)
|
||
|
|
))
|
||
|
|
(defonce blinks (atom 0))
|
||
|
|
|
||
|
|
(defn get-adj [y x]
|
||
|
|
(filter #(some? (get-in @input %))
|
||
|
|
[[(dec y) (dec x)] [(dec y) x] [(dec y) (inc x)]
|
||
|
|
[y (dec x)] [y (inc x)]
|
||
|
|
[(inc y) (dec x)] [(inc y) x] [(inc y) (inc x)]]
|
||
|
|
))
|
||
|
|
|
||
|
|
(defn apply-incs [] (mapv (partial mapv inc) @input))
|
||
|
|
|
||
|
|
(defn next-step []
|
||
|
|
(reset! input (apply-incs))
|
||
|
|
(loop [y 0 x 0]
|
||
|
|
(cond
|
||
|
|
(> (get-in @input [y x]) 9)
|
||
|
|
(do
|
||
|
|
(doseq [p (get-adj y x)]
|
||
|
|
(reset! input (update-in @input p #(if (pos? %) (inc %) %))))
|
||
|
|
(reset! input (update-in @input [y x] (fn [x] 0)))
|
||
|
|
(reset! blinks (inc @blinks))
|
||
|
|
(recur 0 0))
|
||
|
|
(< x (dec (count (first @input))))
|
||
|
|
(recur y (inc x))
|
||
|
|
(< y (dec (count @input)))
|
||
|
|
(recur (inc y) 0)
|
||
|
|
)
|
||
|
|
)
|
||
|
|
@input
|
||
|
|
)
|
||
|
|
|
||
|
|
(dotimes [n 100] (next-step))
|
||
|
|
(println @blinks)
|
||
|
|
|