Problem Description

Given a sequence of length $ 3 $, $ A=(A_1,A_2,A_3) $.

Can you rearrange $ A $ to form an arithmetic sequence?

That is, can you rearrange $ A $ so that $ A_3-A_2=A_2-A_1 $?

Input Format

The input is given from the standard input in the following format:

$ A_1 $ $ A_2 $ $ A_3 $

Output Format

Output Yes if $ A $ can be rearranged to form an arithmetic sequence, otherwise output No.

Sample Input and Output

Sample Input #1

5 1 3

Sample Output #1

Yes

Sample Input #2

1 4 3

Sample Output #2

No

Sample Input #3

5 5 5

Sample Output #3

Yes

Notes/Hints

Constraints

• $1 \leq A_i \leq 100$
• All inputs are integers

Sample Explanation 1

For example, rearranging to $ (1,3,5) $ forms an arithmetic sequence.

Sample Explanation 2

No matter how you rearrange $ A $, it cannot form an arithmetic sequence.

Sample Explanation 3

There are cases where all elements of $ A $ are equal or $ A $ is already an arithmetic sequence.

见题面 Input 部分

见题面 Output 部分