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.
89 lines
1.4 KiB
Clojure
89 lines
1.4 KiB
Clojure
(require '[clojure.string :as str])
|
|
|
|
(defn read-coords []
|
|
(let [line (read-line)]
|
|
(when (not (empty? line))
|
|
(mapv
|
|
#(Integer/parseInt %)
|
|
(str/split
|
|
line
|
|
#"[^\d]+"
|
|
)
|
|
)
|
|
)
|
|
)
|
|
)
|
|
|
|
(defn read-all-coords []
|
|
(loop [cds [] c (read-coords)]
|
|
(if (empty? c)
|
|
cds
|
|
(recur
|
|
(conj cds c)
|
|
(read-coords)
|
|
)
|
|
)
|
|
)
|
|
)
|
|
|
|
(defn mark-coord [cmap x y]
|
|
(update cmap y #(update % x inc))
|
|
)
|
|
|
|
(defn mark-coords [cmap x1 y1 x2 y2]
|
|
(cond
|
|
(= y1 y2)
|
|
(reduce
|
|
#(mark-coord %1 %2 y1)
|
|
cmap
|
|
(range (min x1 x2) (inc (max x1 x2)))
|
|
)
|
|
(= x1 x2)
|
|
(reduce
|
|
#(mark-coord %1 x1 %2)
|
|
cmap
|
|
(range (min y1 y2) (inc (max y1 y2)))
|
|
)
|
|
:else
|
|
(let [ic (if (< x1 x2) [x1 y1] [x2 y2])
|
|
ec (if (> x1 x2) [x1 y1] [x2 y2])
|
|
dy (if (> (second ec) (second ic)) 1 -1)
|
|
]
|
|
(loop [cm cmap c ic]
|
|
(if (> (first c) (first ec))
|
|
cm
|
|
(recur
|
|
(apply (partial mark-coord cm) c)
|
|
[(inc (first c)) (+ dy (second c))]
|
|
)
|
|
)
|
|
)
|
|
)
|
|
)
|
|
)
|
|
|
|
(defn empty-map []
|
|
(vec
|
|
(repeat 1000
|
|
(vec (repeat 1000 0))
|
|
)
|
|
)
|
|
)
|
|
|
|
(def finished-map
|
|
(reduce
|
|
#(apply (partial mark-coords %1) %2)
|
|
(empty-map)
|
|
(read-all-coords)
|
|
)
|
|
)
|
|
|
|
(->> finished-map
|
|
(flatten)
|
|
(map dec)
|
|
(filter pos?)
|
|
(count)
|
|
(println)
|
|
)
|
|
|