#include <bits/stdc++.h>
using namespace std;
using ll = long long;
const int INF = 1e9 + 10;
const ll INFL = 4e18;

int main() {
    string S;
    cin >> S;

    string str = "ZBSED";
    vector<string> ans = {"1st", "2nd", "3rd", "4th", "Alpha"};

    cout << ans[str.find(S[0])] << endl;
}