#include <bits/stdc++.h>

using namespace std;

typedef long long int ll;
typedef double ld;

typedef pair<ll, ll> ii;
typedef vector<ll> vi;
typedef vector<ii> vii;

#define PB push_back
#define FOR(prom, a, b) for ( ll prom = (a); prom < (ll)(b); ++prom )
#define F(a) FOR(i,0,a)
#define FF(a) FOR(j,0,a)

#define EPS (1e-10)

int main () {
	ios::sync_with_stdio(false);
	
	ll S; char C;
	while ( cin >> S >> C ) {
		switch ( C ) {
			case 'R': case 'B':
				cout << S << endl;
				break;
			case 'K':
				cout << ( S == 1 ? 1 : 4 ) << endl;
				break;
			case 'N':
				cout << ( S <= 2 ? 1 : 2 ) << endl;
				break;
		}
	}
	
	return 0;
}