Here is coersion version for Clojure
(defn fib [n]
(let [n (int n)]
(if (or (zero? n) (= n 1))
1
(+ (fib (dec n) ) (fib (- n 2))))))
(time (fib 36))
"Elapsed time 8848.865149"
not much better and how to type hint for a int type?
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