//import java.io.InputStreamReader;
//import java.io.BufferedReader;
//import java.io.IOException;


import java.io.*;
public class ConsoleReader {
    public BufferedReader reader;

    public ConsoleReader(InputStream inStream) {
	reader = new BufferedReader(new InputStreamReader(inStream));
    }
    
    public int readInt() { 
	String inputString = readLine();
	int n = Integer.parseInt(inputString);
	return n;
    }

    public double readDouble() { 
	String inputString = readLine();
	double x = Double.parseDouble(inputString);
	return x;
    }
    
    public String readLine() { 
	String inputLine = "";
	try { 
	    inputLine = reader.readLine();
	}
	catch(IOException e) {
	    System.out.println(e);
	    System.exit(1);
	}
	return inputLine;
    }
}