using System;

public class Program

{

    public static void Main()

    {

        double E, R1, R2, R3 ;

        Console.WriteLine(" Enter three numbers for the resistors ");

        R1=int.Parse(Console.ReadLine());

        R2=int.Parse(Console.ReadLine());

        R3=int.Parse(Console.ReadLine());

        Console.WriteLine(" and a number for the voltage ");

        E=int.Parse(Console.ReadLine());

        Console.WriteLine("---------------------------------");

        Console.WriteLine("RT = " + 1/((1/R1)+(1/R2)+(1/R3)));

        Console.WriteLine("IR1 = " + E/R1);

        Console.WriteLine("IR2 = " + E/R2);

        Console.WriteLine("IR3 = " + E/R3);

        Console.WriteLine("I = " + E/(1/((1/R1)+(1/R2)+(1/R3))));

        Console.WriteLine("PR1 = " + (E/R1)*(E/R1)*R1);

        Console.WriteLine("PR2 = " + (E/R2)*(E/R2)*R2);

        Console.WriteLine("PR3 = " + (E/R3)*(E/R3)*R3);

        Console.WriteLine("PRT = " + E/(1/((1/R1)+(1/R2)+(1/R3)))*E/(1/((1/R1)+(1/R2)+(1/R3)))*1/((1/R1)+(1/R2)+(1/R3)));

        Console.WriteLine("PE = " + E*E/(1/((1/R1)+(1/R2)+(1/R3))));

    }

​

}