#include <bits/stdc++.h>

using namespace std;

int main () {
	for (;;) {
		int n, r;
		cin >> n;
		if (!cin) break;

		char ch;
		cin >> ch;
		switch (ch) {
			case 'K': {
				if (n==1) 
					r = 1;
				else
					r = 4;
				break;
			}
			case 'N': {
				if (n <= 2)
					r = 1;
				else
					r = 2;
				break;
			}
			case 'B':
			case 'R':
				r = n;
		}
		cout << r << '\n';
	}
	return 0;
}