using System;
using System.IO;
using System.Xml;

namespace XmlParser
{
    class Program
    {
        static void Main(string[] args)
        {
            if (args.Length < 1)
            {
                Console.WriteLine("Please provide the path to the XML file as a command-line argument.");
                return;
            }

            string filePath = args[0];
            int count = ParseXmlStream(filePath);
            Console.WriteLine("count = " + count);
        }

        private static int ParseXmlStream(string filePath)
        {
            int count = 0;
            using (FileStream fileStream = new FileStream(filePath, FileMode.Open, FileAccess.Read, FileShare.ReadWrite))
            using (XmlReader reader = XmlReader.Create(fileStream))
            {
                while (reader.Read())
                {
                    if (reader.NodeType == XmlNodeType.Element && reader.Name == "location")
                    {
                        string locationData = reader.ReadElementContentAsString();
                        if (locationData.Contains("Africa"))
                        {
                            count++;
                        }
                    }
                }
            }

            return count;
        }
    }
}