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Contest: Task: Related: TaskB

Score : $100$ points

Problem Statement

In the figure shown in the image below, are the points numbered $a$ and $b$ directly connected by a line segment?

Constraints

  • $1 \leq a \lt b \leq 10$
  • $a$ and $b$ are integers.

Input

Input is given from Standard Input in the following format:

$a$ $b$

Output

If the points numbered $a$ and $b$ are directly connected by a line segment, print Yes; otherwise, print No.
The judge is case-sensitive: be sure to print uppercase and lowercase letters correctly.

Sample Input 1

4 5

Sample Output 1

Yes

In the figure shown in the Problem Statement, the points numbered $4$ and $5$ are directly connected by a line segment.
Thus, Yes should be printed.

Sample Input 2

3 5

Sample Output 2

No

In the figure shown in the Problem Statement, the points numbered $3$ and $5$ are not directly connected by a line segment.
Thus, No should be printed.

Sample Input 3

1 10

Sample Output 3

Yes