Обновить 'README.MD'

README.MD

@@ -83,7 +83,9 @@ NO
     
 4.Зарплата
 ```
-internal class Program
+using System;
+
+class Program
 {
     static void Main(string[] args)
     {
@@ -115,7 +117,9 @@ internal class Program
 
 5.Отеппель
 ```
-internal class Program
+using System;
+
+class Program
  {
      static void Main(string[] args)
      {