from math import gcd
from fractions import Fraction
from re import A
a = int(float(input())*1000)
y = a
x = 1000
g = gcd(x, y)
x //= g
y //= g


ans_abc = ""
if (x + y) % 2 == 0:
    ans_abc = "A"
elif y % 2 == 1:
    ans_abc = "C"
else:
    ans_abc = "B"
ans = 0

ans += x-1  # 縦棒と交わる回数
# print(ans)
ans += y-1  # 横棒と交わる回数
# print(ans)
ans += (abs(x-y)-1)//2  # 傾き１の直線と交わる回数
# print(ans)
ans += (x+y-1)//2  # 傾き-1 の直線と交わる回数


print(ans_abc, ans)