(let* 
  ((l (string->number (read-line)))
   (n (string->number (read-line)))
   (w (sort! (map string->number (string-split (read-line) " ")))))
  (letrec ((count 
            (lambda (w l) 
              (cond 
                ((null? w) 0)
                ((<= (car w) l)
                  (+ 1 (count (cdr w) (- l (car w)))))
                (else 0)))))
   (print (count w l))))