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<Character, String> 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();
    }
    
}