class Program
    {
        public static int sq(int x)
        {
            return ++x;
        }

        public static int sq2(int x)
        {
            return x + 10;
        }

        static void Main(string[] args)
        {
            Func<int, int> f = sq;
            f += sq2;

            Console.WriteLine(f(4));

            Console.ReadLine();
        }
    }