Problem Statement

We have the following $3 \times 3$ board with integers from 1 through 9 written on it.

You are given two integers A and B between 1 and 9, where A < B.
Determine if the two squares with A and B written on them are adjacent horizontally.

Input

The input is given from Standard Input in the following format:
A B

Output

Print Yes if the two squares with A and B written on them are adjacent horizontally, and No otherwise.

Constraints

• $1 \le A < B \le 9$
• A and B are integers.

Sample Input 1

7 8

Sample Output 1

Yes

The two squares with 7 and 8 written on them are adjacent horizontally, so print Yes.

Sample Input 2

1 9

Sample Output 2

No

Sample Input 3

3 4

Sample Output 3

No

见题面 Input 部分

见题面 Output 部分