Make equal elements Array

Given an array of all positive integers and an element “x”.

You need to find out whether all array elements can be made equal or not by performing any of the 3 operations: add x to any element in array, subtract x from any element from array, do nothing.

This operation can be performed only once on an element of array.

1<=|A|<=1e5
1<=A[i],x<=1e9

First argument is array of integers .
Second argument is B which denotes the value of x.

A=[2,3,1]
X=1

Input 2:

A=[2,3,1]
X=2

1

Ouput 2:

0

WE can make all elements equal to 2.

Explanation 2:

There is no way to make all elements equal to 0.