using System;

public class Program

{

    public static void Main()

    {

        //nt a = Console.R

        int a = sub(10,5);

        double b = sub(9.6,5.2);

        double c = add(a,b);

        Console.WriteLine(a);

        Console.WriteLine(b);

        Console.WriteLine(c);

    }

    public static int sub(int x, int y)

    {

      return x - y;

    }

    public static double sub(double x, double y)

    {

        return x - y;

    }

    public static double add(int a, double b)

    {

        return a + b;

    }

}