/**
 * An application which writes, to System.out, the Rot13 encoding
 * of each of its command line arguments, separated by a single
 * space.
 */
public class Rot13 {

    /**
     * Runs the application.
     */
    public static void main(String[] args) {
        for (String s: args) {
            for (int i = 0; i < s.length(); i++) {
                char c = s.charAt(i);
                char lower = Character.toLowerCase(c);

                // Convert a..m <==> n..z
                if ('a' <= lower && lower <= 'm') {
                    c += 13;
                } else if ('n' <= lower && lower <= 'z') {
                    c -= 13;
                }
                System.out.print(c);
            }

            // Separate the encoding of each argument with a space
            System.out.print(' ');
        }

        // Finish the entire encoding with an end-of-line
        System.out.println();
    }
}