using System;

using System.Collections.Generic;

public class Program

{

    public static void Main()

    {

        Console.WriteLine("Hello World");

        var dico = new Dictionary<MyKey, string>();

        dico.Add(new MyKey(10, "John"), "hello hello1");

        dico.Add(new MyKey(15, "Tim"), "hello hello2");

        dico.Add(new MyKey(13, "Jimmy"), "hello hello3");

        dico.Add(new MyKey(11, "Maria"), "hello hello4");

        dico.Add(new MyKey(10, "John"), "hello hello5");

        foreach(var item in dico)

        {

            Console.WriteLine(item);

        }

    }

    struct MyKey 

    {

        int Age;

        string Name;

        public MyKey(int age, string name)

        {

            this.Age = age;

            this.Name = name;

        }

        public override string ToString()

        {

            return this.Age + "-" + this.Name;

        }

    }

}