Problem Statement

Snuke has four cookies with deliciousness A, B, C, and D. He will choose one or more from those cookies and eat them. Is it possible that the sum of the deliciousness of the eaten cookies is equal to that of the remaining cookies?

Input

Input is given from Standard Input in the following format:
A B C D

Output

If it is possible that the sum of the deliciousness of the eaten cookies is equal to that of the remaining cookies, print Yes; otherwise, print No.

Constraints

• All values in input are integers.
• $1 \leq A,B,C,D \leq 10^{8}$

Sample Input 1

1 3 2 4

Sample Output 1

Yes

• If he eats the cookies with deliciousness 1 and 4, the sum of the deliciousness of the eaten cookies will be equal to that of the remaining cookies.

Sample Input 2

1 2 4 8

Sample Output 2

No

• Whatever choice he makes, the sum of the deliciousness of the eaten cookies will never be equal to that of the remaining cookies.

见题面 Input 部分

见题面 Output 部分