#include<iostream>
#include<vector>
#include<algorithm>

using namespace std;
using ll = long long;


int main(){
    cin.tie(nullptr);
    ios::sync_with_stdio(false);

    string s;
    cin>>s;
    int now = 0;
    for(int i = 0;i<s.size();i++){
        if(s[i]=='.') continue;
        now *= 10;
        now += s[i] - '0';
    }
    for(int i = 1;1;i++){
        int nxt = now * i;
        if(nxt%1000!=0) continue;
        int a = i;
        int b = nxt / 1000;
        //cout<<a<<" "<<b<<endl;

        int ans = a - 1 + b - 1 + max(a,b);
        int now = max(a,b);
        if((a+b)%2==1) ans--;
        char use;
        if(b%2==0){
            if(a%2==0) use = 'A';
            else use = 'B';
        }else{
            if(a%2==0) use = 'C';
            else use = 'A';
        }
        cout<<use<<" "<<ans<<endl;
        //cout<<ans<<endl;
        return 0;
    }
}