#include <stdio.h>
#include <string.h>

int main() {
	char s[30];
	scanf("%s", s);

	switch (s[0]) {
	case 'Z':
		printf("1st\n");
		break;
	case 'B':
		printf("2nd\n");
		break;
	case 'S':
		printf("3rd\n");
		break;
	case 'E':
		printf("4th\n");
		break;
	case 'D':
		printf("Alpha\n");
		break;
	}


	return 0;
}