#include<iostream>

using namespace std;

int main() {
	int n; char c; 
	while(cin >> n >> c) {
		if(n==1) { cout << "1" << endl; continue ; }
		if(c=='K') {
			cout << "4"<<endl;
		}
		else if(c=='R') cout << n << endl;
		else if(c=='B') cout << n << endl;
		else if(c=='N') {
			if(n==2) cout << 1 << endl;
			else
				cout << 2 << endl;
		}
	}
}