package main

import (
	"fmt"
)

func main() {
	var s string
	fmt.Scanln(&s)
	if s[0] == 'Z' {
		fmt.Println("1st")
	} else if s[0] == 'B' {
		fmt.Println("2nd")
	} else if s[0] == 'S' {
		fmt.Println("3rd")
	} else if s[0] == 'E' {
		fmt.Println("4th")
	} else {
		fmt.Println("Alpha")
	}
}