(defconstant +inf+ 987654321987654321)

(defun main (&rest argv)
  (declare (ignorable argv))
  (let* ((n (read))
         (v (read))
         (k 1)
         (c (make-array 101 :element-type 'integer :initial-element 0))
         (dp (make-array 10001 :element-type 'integer))
         (res +inf+))
    (loop for i from 1 to n do
          (setf (aref c i) (read)
                (aref c i) (+ (aref c i) (aref c (- i 1)))))
    (loop for i from 2 to n
          when (> (* (aref c k) i) (* (aref c i) k))
            do (setq k i))
    (loop for i from 1  to 10000 do
          (setf (aref dp i) +inf+)
          (loop for j from 1 to n
                when (and (>= i j) (> (aref dp i) (+ (aref dp (- i j)) (aref c j))))
                  do (setf (aref dp i) (+ (aref dp (- i j)) (aref c j)))))
    (decf v n)
    (when (<= v 0)
          (setq res (aref c n)))
    (loop for i to 10000
          when (<= i v)
            do (let* ((r (floor (+ v k -1 (- i)) k))
                      (w (+ (aref c n) (aref dp i) (* r (aref c k)))))
                  (when (> res w)
                        (setq res w))))
    (format t "~d~%" res)))

(main)