#include <cstdlib>
#include <iostream>

using namespace std;


void kingDance(int s){
    if ( s == 1)
        cout << 1<< endl;
    else
        cout << 4 << endl;
}
void knightDance(int s){
    if ( s == 1 || s == 2 )
        cout << 1 << endl;

    else
        cout << 2 << endl;
}
void rookDance(int s){
    if ( s == 1 ){
        cout << 1 << endl;
        return;
    }
    if ( s% 2 == 1 )
        cout << s+1<< endl;
    else
    cout << s << endl;
}
void bishopDance(int s )
{
    cout << s << endl;
}
int main(int argc, char** argv) {
    int s;
    while ( cin >> s ){
        char dance;
        cin >> dance;
        switch(dance) {
            case 'K': {
                kingDance(s);
                break;
            }
            case 'N': {
                knightDance(s);
                break;
            }
            case 'B': {
                bishopDance(s);
                break;
            }
            case 'R': {
                rookDance(s);
                break;
            }
        }
    }
    return 0;
}