Initial data commit

Task/Polymorphic-copy/C-sharp/polymorphic-copy-1.cs

@@ -0,0 +1,39 @@
+using System;
+
+class T
+{
+    public virtual string Name()
+    {
+        return "T";
+    }
+
+    public virtual T Clone()
+    {
+        return new T();
+    }
+}
+
+class S : T
+{
+    public override string Name()
+    {
+        return "S";
+    }
+
+    public override T Clone()
+    {
+        return new S();
+    }
+}
+
+class Program
+{
+    static void Main()
+    {
+        T original = new S();
+        T clone = original.Clone();
+
+        Console.WriteLine(original.Name());
+        Console.WriteLine(clone.Name());
+    }
+}

Task/Polymorphic-copy/C-sharp/polymorphic-copy-2.cs

@@ -0,0 +1,2 @@
+S
+S