using System;

public class Program

{

    public static void Main()

    {

        Console.WriteLine("Hello World");

        string oneType = "abc/def/ghi/jkl";

        Console.WriteLine("Number of occurances are " + (oneType.Length - (oneType.Replace("/","").Length)));

        string anotherType = "abc//def//ghi//jkl";

        Console.WriteLine("Number of occurances are " + ((anotherType.Length - (anotherType.Replace("//","").Length))/2));

    }

}