#include <bits/stdc++.h>
using namespace std;
int main(){
    string s;
    cin>>s;
    string ans;
    if(s[0]=='Z'){
        ans="1st";
    }else if(s[0]=='B'){
        ans="2nd";
    }else if(s[0]=='S'){
        ans="3rd";
    }else if(s[0]=='E'){
        ans="4th";
    }else{
        ans="Alpha";
    }
    cout<<ans<<endl;
    return 0;
}