Problem:
Score : 100 points

Problem Statement

Given are three integers A_1, A_2, and A_3.

If A_1+A_2+A_3 is greater than or equal to 22, print bust; otherwise, print win.

Constraints

1 \leq A_i \leq 13 \ \ (i=1,2,3)

All values in input are integers.

Input

Input is given from Standard Input in the following format:

A_1 A_2 A_3

Output

If A_1+A_2+A_3 is greater than or equal to 22, print bust; otherwise, print win.

Sample Input 1

5 7 9

Sample Output 1

win

5+7+9=21, so print win.

Sample Input 2

13 7 2

Sample Output 2

bust

13+7+2=22, so print bust.

Solution in Common Lisp (SBCL 1.1.14) (judge verdict: Accepted)

(defun main ()
  (let ((a1 (read))
        (a2 (read))
        (a3 (read))
        (ans "bust"))
    (if (<= (+ a1 a2 a3) 21)
        (setf ans "win"))
    ans))


(format t "~A~%" (main))