using System;
using System.Collections;

class App{

 public static void Main(){
   ObjectSet s1 = new ObjectSet(),
             s2 = new ObjectSet();

   Die d1 = new Die(6),  d2 = new Die(10),
       d3 = new Die(16), d4 = new Die(8);

   s1.Insert(d1); s1.Insert(d2);  s1.Insert(d3);
   s1.Insert(d4); s1.Insert(d1);  s1.Insert(d1);
   s1.Delete(d1); s1.Delete(d2); 

   s2.Insert(d3); s2.Insert(d3); s2.Insert(d4); 

   Console.WriteLine("s1: {0}", s1);
   Console.WriteLine("s2: {0}", s2);

// Exercises:
// Console.WriteLine("{0}", s2.Intersection(s1));
// Console.WriteLine("{0}", s2.Union(s1));
// Console.WriteLine("{0}", s2.Diff(s1));

   if (s1.Subset(s2))
     Console.WriteLine("s1 is a subset of s2");
   else 
     Console.WriteLine("s1 is not a subset of s2");

   if (s2.Subset(s1))
     Console.WriteLine("s2 is a subset of s1");
   else 
     Console.WriteLine("s2 is not a subset of s1");
 }
}