namespace Problems
{
    using System;
    internal class Program
    {
        class A
        {
            public virtual void F(int a)
            {
                Console.WriteLine("(1) A.F(int)");
            }
        }
        class B : A
        {
            public void F(object a)
            //public void F(object a)
            {
                Console.WriteLine("(2) B.F(object)");
            }
            public override void F(int a)
            //public override void F(int a)
            {
                Console.WriteLine("(3) B.F(int)");
            }
        }
        class C : B
        {
            public override void F(int a)
            {
                Console.WriteLine("(4) C.F(int)");
            }
            public void F<T>(params T[] a)
            {
                Console.WriteLine("(5) C.F(params T[]");
            }
        }
        public static void Main(string[] args)
        {
            //new B().F(33);
            new B().F("33");
            new B().F("argument");
            new C().F("argument");
            new C().F(33);
        }
    }
}