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 OCaml (4.02.3) (judge verdict: Accepted)

let solve a b =
  if a mod 2 > 0 && b mod 2 > 0 then "Yes" else "No"

let () =
  let rec read () =
    try let ans = (Scanf.scanf "%d %d\n" solve) in
        Printf.printf "%s\n" ans
    with End_of_file -> ()
  in
  read ()
;;