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 Ruby (2.3.3) (judge verdict: Wrong Answer)

a , b = gets.strip.split(' ').map(&:to_i);
ans0 = a * b;
ans1 = a * b * 2;
ans2 = a * b * 3;

if ans0 % 2 == 1 || ans1 % 2 == 1 || ans2 % 2 == 1 
	puts "YES"
	else
	puts "NO"
end