import java.io.*;

public class Keyboard{
	private static BufferedReader in = new BufferedReader(new InputStreamReader(System.in));

	public static String readInput(){
		try{
			return in.readLine();
		}
		catch (IOException e){
			System.out.println("An error has occurred in the Keyboard.readInput() method");
			System.out.println(e.toString());
			System.exit(-1);
		}
		return null;
	}
}