import java.io.*;
class Quiz0 {
	static int[] cx = { 19233 ,28834 ,38199 ,13480 ,26518 ,25429 ,9190
		,35277 ,32516 ,25182 ,21057 ,23221 ,12190 ,25400
		,17215 ,30925 ,22376 ,15000 ,30348 ,25596 ,27539
		,22454 ,21005 ,27677 ,23002 ,13515 ,18677 ,26724
		,20928 ,16947 ,14637 ,16925 ,12746 };
	
	
	public static int code(String s) {
		int result = 0;
		for (int i=0; i<s.length(); i++) result += (i+1)*((int)s.charAt(i));
		return result;
	}
	
	public static void main(String[] args) {
		BufferedReader d = new BufferedReader(new InputStreamReader(System.in));
		String answer;
		while (true) {
			System.out.print("You must first certify that you are running this"
				+ "\nprogram at your own home (since that is the point of this"
				+ "\nexercise...).  So, please answer truthfully, YES or NO:"
				+ "\n"
				+ "\nAre you running this program at your own home (YES or NO)? ");
			try { answer = d.readLine().toLowerCase(); } catch (Exception ee) { answer = "error"; }
			if (answer.equals("yes")) break;
			if (answer.equals("no")) {
				System.out.println("I'm sorry, but you must run this program at your"
				+ "\nown home.  Please go home, install Java and JCreator, and try again.");
				return;
			}
			System.out.println("\n\nPlease enter YES or NO!\n\n");
		}
		while (true) {
			System.out.print("\nOk, now please enter your email address: ");
			try { answer = d.readLine().toLowerCase(); } catch (Exception e) { answer = "input error"; }
			int c = code(answer);
			for (int i=0; i<cx.length;i++)
				if (cx[i] == c) {
					System.out.println("\n\nCongratulations!  You now may obtain your"
						+ "\ncode confirming you passed this 'quiz'.  Your code is: " +
						((13 + (c % 123)) * (17 + (c % 3731)))
						+ "\nBring this code with you to class tomorrow -- it is your entry ticket!\n\n");
					return;
				}
			System.out.println("This email address is not listed in our mailing list."
				+ "\nYou may have mistyped your email address, so please try again."
				+ "\nOtherwise, please send email to Mr. Kosbie at once to resolve this matter.");
		}
	}
}