#include <iostream>
#include <map>

using namespace std;

//ios::sync_with_stdio(false);

int main()
{
    unsigned s = 0;

	while (cin >> s) {
		char t = 0;
		cin >> t;
		if (t == 'K') {
			if (s > 1)
				cout << 4;
			else
				cout << 1;
		} else
		if (t == 'N') {
			if (s>2)
				cout << 2;
			else
				cout << 1;
		} else
		if (t == 'B') {
			cout << s;
		} else
		if (t == 'R') {
			cout << s;
		}
		cout << endl;
	}
}