#include <bits/stdc++.h>
#include <cstdlib>

using namespace std;

int main(int argc, char** argv) {
    ios::sync_with_stdio(false);
    int S; char g;
    while(cin >> S >> g) {
        if (g == 'K') {
            if (S == 1) cout << 1 << endl;
            else cout << 4 << endl;            
        }
        if (g == 'N') {
            if (S < 3) cout << 1 << endl;
            else cout << 2 << endl;
        }
        if (g == 'B') {
            cout << S << endl;
        }
        if (g == 'R') {
            cout << S << endl;
        }
    }
    return 0;
}