(define (System.out.println x)
  (begin
    (display x)
    (newline)
  )
)

(let (
      (Capacity (read))
      (N (read))
     )
  (let loop(
            (ls '())
            (foo (read))
           )
    (if (eof-object? foo)
        (let loop2(
                   (RemainingCapacity Capacity)
                   (UsedBlocks 0)
                   (bar (sort ls <))
                  )
          (if (< (- RemainingCapacity (car bar)) 0)
              (System.out.println UsedBlocks)
              (loop2 (- RemainingCapacity (car bar)) (+ UsedBlocks 1) (cdr bar))
          )
        )
        (loop (cons foo ls) (read))
    )
  )
)