Problem Statement

Determine if there is a segment that directly connects the points numbered a and b in the figure below.

Input

The input is given from Standard Input in the following format:
a b

Output

Print Yes if there is a segment that directly connects the points numbered a and b; print No otherwise.

Constraints

• $1 \leq a \lt b \leq 15$
• a and b are integers.

Sample Input 1

1 2

Sample Output 1

Yes

In the figure in the Problem Statement, there is a segment that directly connects the points numbered 1 and 2, so Yes should be printed.

Sample Input 2

2 8

Sample Output 2

No

In the figure in the Problem Statement, there is no segment that directly connects the points numbered 2 and 8, so No should be printed.

Sample Input 3

14 15

Sample Output 3

No

见题面 Input 部分

见题面 Output 部分