import java.io.*; import java.util.*; public class Main { public static void main(String[] args) throws Exception { Scanner sc = new Scanner(); char[] names = new char[]{'Z', 'B', 'S', 'E', 'D'}; String[] titles = new String[]{"1st", "2nd", "3rd", "4th", "Alpha"}; HashMap convert = new HashMap<>(); for (int i = 0; i < names.length; i++) { convert.put(names[i], titles[i]); } System.out.println(convert.get(sc.next().charAt(0))); } } class Scanner { BufferedReader br = new BufferedReader(new InputStreamReader(System.in)); StringTokenizer st = new StringTokenizer(""); StringBuilder sb = new StringBuilder(); public Scanner() throws Exception { } public int nextInt() throws Exception { return Integer.parseInt(next()); } public long nextLong() throws Exception { return Long.parseLong(next()); } public double nextDouble() throws Exception { return Double.parseDouble(next()); } public String next() throws Exception { while (!st.hasMoreTokens()) { st = new StringTokenizer(br.readLine()); } return st.nextToken(); } }