//#include <atcoder/all>
#include <bits/stdc++.h>
using namespace std;
//using namespace atcoder;
using ll = long long;
#define all(A) A.begin(),A.end()
using vll = vector<ll>;
#define rep(i, n) for (long long i = 0; i < (long long)(n); i++)
using Graph = vector<vector<ll>>;
Graph G;
vll dist;
vector<bool> seen;
set<pair<ll, ll>> S;

ll gcd(ll(a), ll(b)) {
	ll c = a;
	while (a % b != 0) {
		c = a % b;
		a = b;
		b = c;
	}
	return b;
}

int main() {
	string Q;
	cin>>Q;
	ll B=10000;
	ll A=0;
	rep(i,Q.size()){
		if(Q[i]!='.'){
			A+=Q[i]-'0';
			A*=10;
		}
	}
	
	ll G=gcd(A,B);
	A/=G;B/=G;
	if(A%2==0){
		if(B%2==0){
			cout<<"A ";
		}
		else{
			cout<<"B ";
		}
	}
	else{
		if(B%2!=0){
			cout<<"A ";
		}
		else{
			cout<<"C ";
		}
	}
	cout<<(A-1)+(B-1)+(A+B)/2+(abs(A-B)-0)/2<<endl;

}