Timmy and Sarah each have some flowers.

They are in love if one of them has an odd number of flowers and the other has an even number of flowers.

Write a program that reads two integers and prints whether they are in love.

Input

The input contains two integers, flower1 and flower2, on one line.

Output

Output Yes if they are in love.

Otherwise, output No.

Sample Input

1 4

Sample Output

Yes