a,b=input().split(".")
x=1000
y=int(a+b)
from math import gcd
g=gcd(x,y)
x//=g
y//=g
c=x-1+y-1
if x==y:
  print("A",1)
  exit()
for i in range(x+y+1):
  if y>x:
    c+=0<(2*i+1)*x<x*(y-x)
    c+=0<(-(2*i+1))*x<x*(y-x)
    c+=0<(2*i+1)*x<x*(y+x)
  else:
    c+=0>(2*i+1)*x>x*(y-x)
    c+=0>(-(2*i+1))*x>x*(y-x)
    c+=0<(2*i+1)*x<x*(y+x)
if y%2==0 and x%2==0:
  print("A",c)
if y%2==0 and x%2==1:
  print("B",c)
if y%2==1 and x%2==0:
  print("C",c)
if y%2==1 and x%2==1:
  print("A",c)