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    #| BEGIN (Введите свое решение) |#
(define (square x)
  (* x x))

(define (next n)
  (if [= n 2]
      3
      (+ n 2)))

(define (find-divisor n test-divisor)
  (cond ((> (square test-divisor) n) n)
        ((divides? test-divisor n) test-divisor)
        (else (find-divisor n (next test-divisor)))))

(define (divides? a b)
  (= (remainder b a) 0))

(define (smallest-divisor n)
  (find-divisor n 2))
#| END |#