#include <iostream>
#include <locale>
#include <bits/stdc++.h>
using namespace std;


struct point {
   int x;
   int y;
};

int main(int argc, char** argv) {

    std::ios::sync_with_stdio(false);
    int s;
    char c;
    while(cin >> s >> c){
        if(c == 'R'){
            cout << s << endl;
        }
        else if(c == 'N') {
            if(s <= 2) cout << 1 << endl;
            else cout << 2 << endl;
        }
        else if(c == 'B'){
            cout << s << endl;
        }
        else if(c == 'K'){
            if( s < 2) cout << 1 << endl;
            else cout << 4 << endl;
        }
        
    }
    
    return 0;
}