(defconstant +inf+ 1000000000000000000)

  (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)