#include <iostream>
#include <string>
#include <algorithm>
#include <vector>
#include <iomanip>
#include <cmath>
#include <stdio.h>
#include <queue>
#include <deque>
#include <cstdio>
#include <set>
#include <map>
#include <bitset>
#include <stack>
#include <cctype>
using namespace std;
int main() {
	long double a;
	cin >> a;
	if (a > 1) {
		cout << "B " << endl;
		for (long double i = 1;; i++) {
			if (a * i == floor(a * i)) {
				cout << (a + 2) * i - 3 << endl;
				return 0;
			}
		}
	}
	else if (a < 1) {
		cout << "C " << endl;
		for (long double i = 1;; i++) {
			if (a * i == floor(a * i)) {
				cout << (a + 2) * i - 3 << endl;
				return 0;
			}
		}
	}
	else {
		cout << "A 1" << endl;
	}
}