#include <stdio.h>

int gcd(int a, int b)
{
	if (a == 0) return b;
	else return gcd(b % a, a);
}

int main()
{
	char A[10];
	scanf("%s", A);
	
	int x = 1000, y = 0, i, g;
	for (i = 0; A[i] != 0; i++) if (A[i] != '.') y = y * 10 + A[i] - '0';
	g = gcd(x, y);
	x /= g;
	y /= g;
	if (y % 2 == 0) {
		if (x % 2 == 0) printf("A ");
		else printf("B ");
	} else {
		if (x % 2 == 0) printf("C ");
		else printf("A ");
	}
	printf("%d\n", x - 1 + y - 1 + ((x > y)? x - 1: y - 1) + ((x % 2 == 1 && y % 2 == 1)? 1: 0));
	fflush(stdout);
	return 0;
}