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;; jneira's solution to http://4clojure.com/problem/53
(fn sub [c]
(let [gt (comp last sort)
res (gt
(reduce
(fn [[x y] n]
(if (> n (last y))
[x (conj y n)]
[(gt [x y])
(vector n)]))
[[] [(first c)]] (rest c)))]
(if (> (count res) 1) res [])))
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