text: #include <cmath>
  #include <cstdio>
  #include <vector>
  #include <iostream>
  #include <algorithm>
  
  using namespace std;
  
  class Difference {
  private:
  	vector<int> elements;
  
  public:
  	int maximumDifference;
  	Difference(vector<int> a) : elements(a) {};
  
  	void computeDifference()
  	{
  		for (auto it = elements.begin(); it != elements.end(); ++it)
  		{
  			for (int i = 0; i < elements.size(); i++)
  			{
  				if (abs(elements[i] - *it) > maximumDifference)
  				{
  					maximumDifference = abs(elements[i] - *it);
  				}
  			}
  		}
  	}
  
  	// Add your code here
  
  }; // End of Difference class