using System;

public interface ISchool

{

    void study();

}

public interface ICollege

{

    void study();

}

​

public class EducationSystem :ISchool,ICollege

{

    void ISchool.study()

    {

    Console.WriteLine("School");    

    }

    void ICollege.study()

    {

    Console.WriteLine("College");   

    }

}

public class Program 

{

    public static void Main()

    {

        Console.WriteLine("Hello World");       

        ISchool e =new EducationSystem();

        e.study();

        ICollege c =new EducationSystem();

        c.study();

    }

}