#include<bits/stdc++.h>

using namespace std;

int main(){
    string S0; cin >> S0;
    unordered_map<char, string> D;
    D['Z']="1st"; D['B']="2nd"; D['S']="3rd"; D['E']="4th"; D['D']="Alpha";
    cout << D[S0[0]] << endl;
}