#include "stdafx.h"
#include <iostream>
#include <string>
using namespace std;

class Hello
{
public:
	int x, n, a;

	int Kalkulimi()
	{
		int S = 0;

		for (int i = 1; i <= n + 1; i++)
		{
			S = S + (2 * i + a);
		}
		return 3 * x + 4 * S;
	}
};



int main()
	{
		Hello beta;
		beta.x = 2;
		beta.n = 3;
		beta.a = 4;
		beta.Kalkulimi();

		cout << "Vlera e funksionit eshte : " << beta.Kalkulimi() << endl;


		cin.get();
		cin.get();
		return 0;
	}