#include <bits/stdc++.h>

using i32 = std::int32_t;
using u32 = std::uint32_t;
using i64 = std::int64_t;
using u64 = std::uint64_t;
using i128 = __int128_t;
using u128 = __uint128_t;
using isize = std::ptrdiff_t;
using usize = std::size_t;

class rep {
    struct Iter {
        usize itr;
        constexpr Iter(const usize pos) noexcept : itr(pos) {}
        constexpr void operator++() noexcept { ++itr; }
        constexpr bool operator!=(const Iter& other) const noexcept { return itr != other.itr; }
        constexpr usize operator*() const noexcept { return itr; }
    };
    const Iter first, last;

  public:
    explicit constexpr rep(const usize first, const usize last) noexcept : first(first), last(std::max(first, last)) {}
    constexpr Iter begin() const noexcept { return first; }
    constexpr Iter end() const noexcept { return last; }
};

template <class T> using Vec = std::vector<T>;

std::pair<u64, u64> get() {
    std::string S;
    std::cin >> S;
    u64 x = 0;
    for (const auto c : S) {
        if (c != '.') {
            x = x * 10 + (c - '0');
        }
    }
    const auto g = std::gcd(x, 1000);
    return std::make_pair(x / g, 1000 / g);
}

void main_() {
    const auto [a, b] = get();
    if ((a + b) % 2 == 0) {
        std::cout << "A ";
    } else {
        std::cout << (a % 2 == 0 ? 'B' : 'C') << ' ';
    }
    u64 ans = 0;
    ans += a - 1;
    ans += b - 1;
    ans += (a + b) / 2;
    ans += (a >= b ? a - b : b - a) / 2;
    std::cout << ans << '\n';
}

int main() {
    std::ios_base::sync_with_stdio(false);
    std::cin.tie(nullptr);
    main_();
    return 0;
}