#include <stdio.h>
#include <bits/stdc++.h>
#include <atcoder/all>
using namespace atcoder;
using mint = modint998244353;
using namespace std;
#define rep(i,n) for (int i = 0; i < (n); ++i)
#define Inf 1000000001

int main(){
	double a;
	cin>>a;
	
	long long dy = round(a * 1000.0);
	long long dx = 1000;
	if(dy==1000){
		cout<<"A 1"<<endl;
		return 0;
	}
	long long W = lcm(dy,dx);
	
	long long ty = W/dy,tx = W/dx;
	long long L = lcm(ty,tx);
	long long yy = 0LL;
	long long xx = 0LL;
	
	while(true){
		
		yy += L/ty,xx += L/tx;
		long long ans = yy + xx;
	//	cout<<yy<<','<<xx<<','<<ans<<endl;
		ans -= 2;
		ans += max(yy,xx);
		//ans--;
		
		long long aa = yy%2,bb = xx%2;
		char c;
		if(aa==bb)c = 'A';
		else if(aa==0)c = 'B';
		else c = 'C';
		if(c=='B'||c=='C')ans--;
		cout<<c<<' '<<ans<<endl;
		return 0;
		
	}
	
	
	return 0;
}