import java.io.*;

public class KeyboardReader {
    private BufferedReader reader;

    public KeyboardReader() {
        reader = new BufferedReader(new InputStreamReader(System.in));
    }
    
    private String readKeyboard() {
        String line = "";
	try {
            line = reader.readLine();
	} catch (IOException e) {
	    e.printStackTrace();
	}
	return line;
    }

    public String getKeyboardInput() { 
        return readKeyboard();
    }
    
    public int getKeyboardInteger() {
        return Integer.parseInt(readKeyboard());
    }

    public double getKeyboardDouble() {
        return Double.parseDouble(readKeyboard());
    }

    public void prompt(String s) {
        System.out.print(s);
    }

    public void display(String s) {
        System.out.print(s);
    }

}