#include<iostream>
#include<string>
#include<vector>
#include<algorithm>
#include<bitset>
#include<set>
#include<map>
#include<stack>
#include<queue>
#include<deque>
#include<list>
#include<iomanip>
#include<cmath>
#include<cstring>
#include<functional>
#include<cstdio>
#include<cstdlib>
#include<numeric>
#include<ctime>
//#include<atcoder/all>
using namespace std;
//using namespace atcoder;

#define repr(i, a, b) for (int i = (int)(a); i < (int)(b); i++)
#define rep(i, n) repr(i, 0, n)
#define INF 2e9
//#define MOD 1000000007
#define MOD 998244353
#define LINF (long long)4e18
#define jck 3.141592
#define PI acos(-1.0)

const double EPS = 1e-10;

using ll = long long;
using Pi = pair<int,int>;
using Pl = pair<ll,ll>;
//using mint = modint1000000007;

int dh[] = {-1,0,1,0};
int dw[] = {0,1,0,-1};


int main(){
    double a; cin >>a;
    ll p = round(a*1000);
    repr(i,1,1001){
        int p2 = p*i;
        if(p2%1000 == 0){
            p2 /= 1000;
            if(i == p2) cout << 'A' << " ";
            else if(i > p2) cout << 'C' << " ";
            else cout << 'B' << " ";
            int ans = i-1 + p2-1 + i/2 + p2/2 + (max(i,p2)-min(i,p2))/2;
            cout << ans << endl;
            return 0;
        }
    }

}