/**
 *
 */
import java.io.*;

public class Guessing {
    public static void main(String[] args) 
    {
	BufferedReader input = 
	    new BufferedReader(new InputStreamReader(System.in));

	int max = 1024;

	if (args.length > 0) max = Integer.parseInt(args[0]);

	int target = (int)(max * Math.random());

	System.out.println("Hi, I'm thinking of a number between 0 and " + max);

	int guess = getIntPrompted("Your guess, please: ", input);
	int guesses = 1;

	while (guess != target) { 
	    if (guess < target)
		guess = getIntPrompted("Too low, try again: ", input);
	    else guess = getIntPrompted("Too high, try again: ", input);
	    guesses++;
	}

	System.out.println("Got it (" + guesses + " guesses)");
    }

    public static int getIntPrompted(String prompt, BufferedReader input) 
    {
	try {
	    System.out.print(prompt);
	    String text = input.readLine();
	    return Integer.parseInt(text);
	} catch (Exception e) {
	    System.out.println(" That was not a proper number, try again.");
	    return getIntPrompted(prompt,input);
	} 
    }
}