(in-package :cl-user)
(eval-when (:compile-toplevel :load-toplevel :execute)
  (defparameter *opt*
    #+swank '(optimize (speed 3) (safety 2))
    #-swank '(optimize (speed 3) (safety 0) (debug 0)))
  #+swank (ql:quickload '(:cl-debug-print :fiveam :cp/util) :silent t)
  #+swank (use-package :cp/util :cl-user)
  #-swank (set-dispatch-macro-character
           #\# #\> (lambda (s c p) (declare (ignore c p)) `(values ,(read s nil nil t)))))
#+swank (set-dispatch-macro-character #\# #\> #'cl-debug-print:debug-print-reader)

(macrolet ((def (b)
             `(progn (deftype ,(intern (format nil "UINT~A" b)) () '(unsigned-byte ,b))
                     (deftype ,(intern (format nil "INT~A" b)) () '(signed-byte ,b))))
           (define-int-types (&rest bits) `(progn ,@(mapcar (lambda (b) `(def ,b)) bits))))
  (define-int-types 2 4 7 8 15 16 31 32 62 63 64))

(defconstant +mod+ 1000000007)

(defmacro dbg (&rest forms)
  #+swank (if (= (length forms) 1)
              `(format *error-output* "~A => ~A~%" ',(car forms) ,(car forms))
              `(format *error-output* "~A => ~A~%" ',forms `(,,@forms)))
  #-swank (declare (ignore forms)))

(declaim (inline println))
(defun println (obj &optional (stream *standard-output*))
  (let ((*read-default-float-format*
          (if (typep obj 'double-float) 'double-float *read-default-float-format*)))
    (prog1 (princ obj stream) (terpri stream))))

;; BEGIN_INSERTED_CONTENTS
;; BEGIN_USE_PACKAGE
(in-package :cl-user)

;;;
;;; Body
;;;

(defun main ()
  (let* ((n (read))
         (tt (read))
         (as (make-array n :element-type 'uint8 :initial-element 0))
         (dp (make-array (list (+ n 1) (+ tt 1)) :element-type 'bit :initial-element 0)))
    (dotimes (i n)
      (setf (aref as i) (read)))
    (setf (aref dp n tt) 1)
    (loop for x from (- n 1) downto 1
          for a = (aref as x)
          do (dotimes (y tt)
               (when (or (and (<= (+ y a) tt) (= 1 (aref dp (+ x 1) (+ y a))))
                         (and (<= (* y a) tt) (= 1 (aref dp (+ x 1) (* y a)))))
                 (setf (aref dp x y) 1))))
    (let ((val (aref as 0)))
      (loop for x from 1 below n
            for a = (aref as x)
            do (cond ((and (<= (+ val a) tt) (= 1 (aref dp (+ x 1) (+ val a))))
                      (write-char #\+)
                      (setq val (+ val a)))
                     ((and (<= (* val a) tt) (= 1 (aref dp (+ x 1) (* val a))))
                      (write-char #\*)
                      (setq val (* val a)))))
      (terpri))))

#-swank (main)

;;;
;;; Test and benchmark
;;;

#+swank
(progn
  (defparameter *lisp-file-pathname* (uiop:current-lisp-file-pathname))
  (setq *default-pathname-defaults* (uiop:pathname-directory-pathname *lisp-file-pathname*))
  (uiop:chdir *default-pathname-defaults*)
  (defparameter *dat-pathname* (uiop:merge-pathnames* "test.dat" *lisp-file-pathname*))
  (defparameter *problem-url* "https://yukicoder.me/problems/no/10"))

#+swank
(defun gen-dat ()
  (uiop:with-output-file (out *dat-pathname* :if-exists :supersede)
    (format out "")))

#+swank
(defun bench (&optional (out (make-broadcast-stream)))
  (time (run *dat-pathname* out)))

#+(and sbcl (not swank))
(eval-when (:compile-toplevel)
  (when (or (> sb-c::*compiler-warning-count* 0)
            sb-c::*undefined-warnings*)
    (error "count: ~D, undefined warnings: ~A"
           sb-c::*compiler-warning-count*
           sb-c::*undefined-warnings*)))

;; To run: (5am:run! :sample)
#+swank
(5am:test :sample
  (5am:is
   (equal "+*+
"
          (run "4
31
1 2 10 1
" nil)))
  (5am:is
   (equal "++
"
          (run "3
6
2 3 1
" nil)))
  (5am:is
   (equal "**
"
          (run "3
2
1 1 2
" nil))))