import sys
input = lambda : sys.stdin.readline().rstrip()

sys.setrecursionlimit(2*10**5+10)
write = lambda x: sys.stdout.write(x+"\n")
debug = lambda x: sys.stderr.write(x+"\n")
writef = lambda x: print("{:.12f}".format(x))


a = int(input().replace(".", ""))
l = [
    "AB",
    "CA"
]
for i in range(1, 1001):
    if a*i%1000==0:
        x = i
        y = a*i//1000
        break
else:
    assert 0
c = l[y%2][x%2]
ans = (x-1) + (y-1)
ans += (x+y)//2
ans += (abs(x-y))//2
print(c, ans)