#include <bits/stdc++.h>

typedef long long ll;
typedef long double ld;

using namespace std;

#define rep(i, a, n) for (int i = (a); i < (n); i++)
#define per(i, a, n) for (int i = (n) - 1; i >= (a); i--)

int shi(int s, char c) {
	if (c == 'K')
		return (s == 1) ? 1 : 4;
	if (c == 'N')
		return (s <= 2) ? 1 : 2;
	assert(c == 'R' || c == 'B');
	return s;
}

int main(void) {
	ios::sync_with_stdio(false);
	int s;
	char c;
	while (cin >> s >> c) {
		cout << shi(s, c) << '\n';
	}

	return 0;
}