Problem:
Score : 100 points

Problem Statement

You are given integers A and B, each between 1 and 3 (inclusive).

Determine if there is an integer C between 1 and 3 (inclusive) such that A \times B \times C is an odd number.

Constraints

All values in input are integers.

1 \leq A, B \leq 3

Input

Input is given from Standard Input in the following format:

A B

Output

If there is an integer C between 1 and 3 that satisfies the condition, print Yes; otherwise, print No.

Sample Input 1

3 1

Sample Output 1

Yes

Let C = 3. Then, A \times B \times C = 3 \times 1 \times 3 = 9, which is an odd number.

Sample Input 2

1 2

Sample Output 2

No

Sample Input 3

2 2

Sample Output 3

No

Solution in Common Lisp (SBCL 1.1.14) (judge verdict: Wrong Answer)

(defun main ()
  (defparameter s_list (loop :for a :from 1 :upto (read) collect(read-line)))
  (if (equal s_list (remove-duplicates s_list :test #'equal))
      (if (loop :for k :from 1 :upto (1- (length s_list)) always(equal (car (last (concatenate 'list (nth (1- k) s_list)))) (char (nth k s_list) 0)))
          "Yes"
          "No")
      "No")
  )
(format t "~A" (main))