import java.util.Scanner;
public class Main {
    public static void main(String[] args) {
        Scanner sc = new Scanner(System.in);
        String str = sc.nextLine(), s = str.replaceAll("-", "");
        int sum = 0;
        for (int i = 0; i < s.length() - 1; i++) sum += Integer.parseInt(String.valueOf(s.charAt(i))) * (i + 1);
        String last = "10".equals(String.valueOf(sum % 11)) ? "X" : String.valueOf(sum % 11);
        if (last.equals(str.substring(12))) System.out.println("Right");
        else System.out.println(str.substring(0, 12) + last);
    }
}