#define rep(i,n) for(int i=0;i<(int)(n);i++)
#define ALL(v) v.begin(),v.end()
typedef long long ll;
 
#include<bits/stdc++.h>
using namespace std;

int main(){
  ios::sync_with_stdio(false);
  std::cin.tie(nullptr);
  
  string t="ZBSE";
  string s;
  cin>>s;
  vector<string> A={"1st","2nd","3rd","4th"};
  rep(i,4){
    if(s[0]==t[i]){
      cout<<A[i]<<endl;
      return 0;
    }
  }
  cout<<"Alpha"<<endl;

  return 0;
}