#include <iostream>
#include <string>
using namespace std;

int main(){
    string line;
    getline(cin, line);
    if(line[0] == 'Z') cout << "1st" << endl;
    else if(line[0] == 'B') cout << "2nd" << endl;
    else if(line[0] == 'S') cout << "3rd" << endl;
    else if(line[0] == 'E') cout << "4th" << endl;
    else cout << "Alpha" << endl;
    return 0;
}