from math import gcd
t = int(float(input()) * 1000 + 0.5)
g = gcd(t, 1000)
a = 1000 // g
b = t // g
v = 'A' if (a + b) % 2 == 0 else 'B' if a % 2 else 'C'

ans = a - 1 + b - 1
p = abs(a - b)
q = abs(a + b)
ans += p // 2 + q // 2
print(v, ans)