using System;
using System.Linq;
using System.Collections;
using System.Collections.Generic;
using System.Xml;
using System.Xml.Linq;
public class MainClass {
public static void Main() {
XDocument xDocument = new XDocument(new XElement("BookParticipant"));
XDeclaration xDeclaration = new XDeclaration("1.0", "UTF-8", "yes"); xDocument.Declaration = xDeclaration;
Console.WriteLine(xDocument);
}
}