#include <bits/stdc++.h>
using namespace std;
#define rep(i, n) for(int i = 0; i < n; i++)
#define rep2(i, x, n) for(int i = x; i <= n; i++)
#define rep3(i, x, n) for(int i = x; i >= n; i--)
#define each(e, v) for(auto &e: v)
#define pb push_back
#define eb emplace_back
#define all(x) x.begin(), x.end()
#define rall(x) x.rbegin(), x.rend()
#define sz(x) (int)x.size()
using ll = long long;
using pii = pair<int, int>;
using pil = pair<int, ll>;
using pli = pair<ll, int>;
using pll = pair<ll, ll>;
const int MOD = 1000000007;
//const int MOD = 998244353;
const int inf = (1<<30)-1;
const ll INF = (1LL<<60)-1;
template<typename T> bool chmax(T &x, const T &y) {return (x < y)? (x = y, true) : false;};
template<typename T> bool chmin(T &x, const T &y) {return (x > y)? (x = y, true) : false;};

struct io_setup{
    io_setup(){
        ios_base::sync_with_stdio(false);
        cin.tie(NULL);
        cout << fixed << setprecision(15);
    }
} io_setup;

int to_int(string S){
    int ret = 0;
    each(e, S){
        if(e == '.') continue;
        ret *= 10;
        ret += e-'0';
    }
    return ret;
}

int main(){
    string S; cin >> S;

    int x = 1000, y = to_int(S);
    int g = gcd(x, y);
    x /= g, y /= g;

    if((x+y)%2 == 0) cout << "A ";
    else if(y&1) cout << "C ";
    else cout << "B ";

    cout << (x-1)+(y-1)+(x+y)/2+abs(x-y)/2 << '\n';
}