import sys
from math import gcd
sys.setrecursionlimit(10**7)
def I(): return int(sys.stdin.readline().rstrip())
def MI(): return map(int,sys.stdin.readline().rstrip().split())
def LI(): return list(map(int,sys.stdin.readline().rstrip().split()))
def LI2(): return list(map(int,sys.stdin.readline().rstrip()))
def S(): return sys.stdin.readline().rstrip()
def LS(): return list(sys.stdin.readline().rstrip().split())
def LS2(): return list(sys.stdin.readline().rstrip())


a = float(input())
a *= 1000
a += .5
a = int(a)

b = 1000
g = gcd(a,b)

a //= g
b //= g
ans1 = a+b-2+(a+b)//2+abs(a-b)//2
if (a+b) % 2 == 0:
    ans0 = 'A'
else:
    if a % 2 == 0:
        ans0 = 'B'
    else:
        ans0 = 'C'

print(ans0,ans1)