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48 lines
921 B
Clojure
48 lines
921 B
Clojure
3 years ago
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(def bitcount 12)
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(def input
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(loop [tot []]
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(let [line (read-line)]
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(if (empty? line)
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tot
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(recur (conj tot (Integer/parseInt line 2)))
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)
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)
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)
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)
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(defn countbit [lst bit]
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(->> lst
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(map #(if (bit-test % bit) 1 0))
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(apply +)
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)
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)
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(defn filterbit [lst bit v]
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(if (= 1 (count lst))
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lst
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(loop [l lst r []]
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(if (empty? l)
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r
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(recur
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(rest l)
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(if (= (bit-test (first l) bit) v)
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(conj r (first l))
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r
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)
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)
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)
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)
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)
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)
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(loop [bit (dec bitcount) lst0 input lst1 input]
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(if (and (= 1 (count lst0)) (= 1 (count lst1)))
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(println (* (first lst0) (first lst1)))
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(recur
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(dec bit)
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(filterbit lst0 bit (>= (countbit lst0 bit) (/ (count lst0) 2)))
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(filterbit lst1 bit (< (countbit lst1 bit) (/ (count lst1) 2)))
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)
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)
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)
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