using System;

namespace p2
{
    class Clasa1
    {
        double multiply(double v1, double v2)
        {
            return v1 * v2;
        }

        void print(double a)
        {
            Console.WriteLine(a);
        }
        void print2(double a)
        {
            Console.WriteLine(a);
        }
    }
    class Clasa2
    {
        double multiply(double a, double b)
        {
            return a * b;
        }

        void print(double a)
        {
            Console.WriteLine(a);
        }
        void print2(double a)
        {
            Console.WriteLine(a);
        }
        class Clasa3
        {
            double multiply(double a, double b)
            {
                return a * b;
            }
            void print(double a)
            {
                Console.WriteLine(a);
            }
            void print2(double a)
            {
                Console.WriteLine(a);
            }
        }
        class Program
        {
            static void Main(string[] args)
            {
                Console.WriteLine("Hello World!");

            }
        }
    }
}