Given three numbers, check if one of them equals the average of the other two X81984
Write a program that reads three integers and checks if there is one of them which equals the average of the other two.
Input
Three integer numbers in one line.
Output
If one of the three numbers equals the average of the other two, prints YES. Otherwise, prints NO.
Public test cases
Input
1 2 3
Output
YES
Input
2 1 3
Output
YES
Input
3 1 2
Output
YES
Input
1 1 2
Output
NO
Input
-1 -1 -2
Output
NO
Input
-1 -2 -3
Output
YES
Input
-2 -1 -3
Output
YES
Input
-3 -1 -2
Output
YES
Input
-10 0 10
Output
YES
Input
-13 5 -8
Output
NO