#include <bits/stdc++.h>

using namespace std;

int main () {
	ios::sync_with_stdio(false);

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





	return 0;
}