using System;

public class Program

{

    public static void Main()

    {

        Console.WriteLine("====================================");

        Console.WriteLine("= MUHAMMAD FEBRIYAN ADHA SEMBIRING =");

        Console.WriteLine("====================================");

        Console.WriteLine("= SOAL NO 2                        =");

        Console.WriteLine("====================================");

        int a, b, c, d;

        double y;

        Console.Write("masukan bilangan a: ");

        a = Convert.ToInt32(Console.ReadLine());

        Console.Write("masukan bilangan b: ");

        b = Convert.ToInt32(Console.ReadLine());

        Console.Write("masukan bilangan c: ");

        c = Convert.ToInt32(Console.ReadLine());

        Console.Write("masukan bilangan d: ");

        d = Convert.ToInt32(Console.ReadLine());

        //Rumus Menghitung y = (3*a) + (6*b) - (2*c) x (5*d) / 7

        y = (3*a) + (6*b) - (2*c) * (5*d) / 7;

        Console.WriteLine("Jumlah dari input yang diberikan adalah : " + y);

        //Note : hasil dibulatkan . 

    }

}