#include <bits/stdc++.h>
// #include <atcoder/segtree>
using namespace std;
// using namespace atcoder;
#define int long long
using vec_int = vector<int>;
using P = pair<int,int>;
using T = tuple<int,int,int>;
using ll = long long;
#define rep(i, n) for(int i = 0; i < (int)(n); i++)

int charToInt(char c){
    char zero_num = '0';
    return (int)c - (int)zero_num;
}

void cout_line(vector<int> &a){
    for(int i=0;i<a.size();i++){
        if(i<a.size()-1){
            cout<<a.at(i)<<" ";
        }else{
            cout<<a.at(i)<<endl;
        }
    }
}

signed main(){
    long double a;  cin>>a;
    int a2 = round(a*1000);
    int a3 = a2;
    for(int i=0;i<3;i++){
        if(a2%2==0)a2/=2;
    }
    for(int i=0;i<3;i++){
        if(a2%5==0)a2/=5;
    }
    int divided = a3/a2;
    int width = 1000/divided;

    char ans;
    if(a2%2==1){
        if(width%2==1){
            ans = 'A';
        }else{
            ans = 'C';
        }
    }else{
        if(width%2==1){
            ans = 'B';
        }else{
            ans = 'A';
        }
    }
 
    if((width+a2)%2==1){
       cout<<ans<<" "<<width*2-2+a2-1<<endl;
    }else{
       cout<<ans<<" "<<width*2-1+a2-1<<endl;
    }
    





    return 0;
}