/*
#include <tinyxml.h>
#include <iostream>

using namespace std;

void get_person(string& find)
{
	TiXmlDocument doc("XMLFile1.xml");
	if (!doc.LoadFile())
		return;
	TiXmlElement* element = doc.FirstChildElement("AddressBook");
	element = element->FirstChildElement("Contact");
	int answer = 0;

	TiXmlDocument ans;

	while (element != NULL) {
		if (string(element->FirstChildElement("FirstName")->GetText()) == find) {
			answer++;
			ans.LinkEndChild(new TiXmlElement(*element));
		}
		element = element->NextSiblingElement("Contact");

	}

	ans.SaveFile("XMLFile2.xml");
	cout << answer;
}

int main()
{
	string have = "Ivan";
	get_person(have);
	return 0;
}
*/




<AddressBook>
  <Contact>
    <FirstName>Ivan</FirstName>
    <LastName>Petrov</LastName>
    <Phone>
      <phonenumber>123456</phonenumber>
      <accountindex>1</accountindex>
      <downloaded>1</downloaded>
    </Phone>
    <Groups>
      <groupid>2</groupid>
    </Groups>
  </Contact>
  <Contact>
    <FirstName>Petr</FirstName>
    <LastName>Sidorov</LastName>
    <Phone>
      <phonenumber>456789</phonenumber>
      <accountindex>1</accountindex>
      <downloaded>1</downloaded>
    </Phone>
    <Groups>
      <groupid>2</groupid>
    </Groups>
  </Contact>
  <Contact>
    <FirstName>Petr</FirstName>
    <LastName>Sidorov</LastName>
    <Phone>
      <phonenumber>456789</phonenumber>
      <accountindex>1</accountindex>
      <downloaded>1</downloaded>
    </Phone>
    <Groups>
      <groupid>2</groupid>
    </Groups>
  </Contact>
</AddressBook>