#include<stdio.h>
char s[102];
int main()
{
	scanf("%[^\n]", s);
	if (s[0] == 'Z')
		printf("1st\n");
	else if (s[0] == 'B')
		printf("2nd\n");
	else if (s[0] == 'S')
		printf("3rd\n");
	else if (s[0] == 'E')
		printf("4th\n");
	else
		printf("Alpha\n");
	return 0;
}