(define (CheckThree x)
    (let loop((i x))
        (if (= (modulo i 10) 3)
            #t
            (if (> i 13)
                (loop (floor (/ i 10)))
                #f))))

(let (
      (From (read (current-input-port)))
      (To      (read (current-input-port)))
      )
    (let loop((i From))
        (begin
            (when (or  (= (modulo i 3) 0 )  (CheckThree i))
                (begin (write i) (newline)))
            (unless (= i To)
                (loop (+ i 1)))
        )
    )
)