;; LOL BRUTIN
(define (jeff l h notes)
  (let loop ((x l))
    (cond
      ((> x h) "NO")
      ((fold 
        (λ (n acc) (and acc
                        (or (= 0 (remainder x n))
                            (= 0 (remainder n x)))))
        #t
        notes) x)
      (else (loop (+ x 1))))))