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 Julia (0.5.0) (judge verdict: Runtime Error)

function gcd(a,b)
	r = a%b
	while r != 0
		a = b
		b = r
		r = a%b
	end
	
	return(b)
end



function main()
	x = parse.(split(readline()))
	y = parse.(split(readline()))
	r = abs(x[2]-y[1])
	for i in 2:x[1]
		if r == 1
			break
		else
			s = abs(x[2]-y[i])
			if s>r
				r = gcd(s,r)
			else
				r = gcd(r,s)
			end
		end
	end
	print(r)
end

main()