Contest Duration: - (local time) (100 minutes) Back to Home
A - Edge Checker /

Time Limit: 2 sec / Memory Limit: 1024 MB

### 制約

• 1 \leq a \lt b \leq 10
• a, b は整数

### 入力

a b


### 出力

a 番の点と b 番の点が線で直接結ばれている場合は Yes を出力し、結ばれていない場合は No を出力せよ。
ジャッジは英大文字と英小文字を厳密に区別することに注意せよ。

### 入力例 1

4 5


### 出力例 1

Yes


### 入力例 2

3 5


### 出力例 2

No


### 入力例 3

1 10


### 出力例 3

Yes


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