#include <iostream>
#include <vector>
#include <cmath>
#include <map>
#include <set>
#include <iomanip>
#include <queue>
#include <algorithm>
#include <numeric>
#include <deque>
#include <complex>
#include <cassert>

using namespace std;
using ll = long long;

int main(){

    char c;
    map<char, string> mp;
    mp['Z'] = "1st";
    mp['B'] = "2nd";
    mp['S'] = "3rd";
    mp['E'] = "4th";
    mp['D'] = "Alpha";
    cin >> c;
    cout << mp[c] << endl;

    return 0;
}