#include <iostream>
#include <string>
#include <fstream>

using namespace std;

int main(int argc, char *argv[])
{
	ifstream fin;

	string name = "";
	fin.open ("helloworld.txt");


	if (fin.fail())
	{
		cout<<"Error could not open file!" <<endl;
	}

	getline(fin, name);

	if (name == "")
	{
		cout<< "Hello World!"<<endl;
	}

	else 
	{
		cout<< name << "!" << endl;
	}

	fin.close();
}