#include <iostream>

using namespace std;

int main()
{
    std::ios_base::sync_with_stdio(false);


    while(!cin.eof())
    {
        int dim;
        char fig;

        cin >> dim;
        if(cin.eof())
            break;
        cin >> fig;

        if(fig == 'K')
        {
            if(dim == 1)
                cout << 1;
            else
                cout << 4;
        }
        else if(fig == 'N')
        {
            if(dim < 3)
                cout << 1;
            else
                cout << 3;
        }
        else if(fig == 'B')
        {
            cout << dim;
        }
        else
        {
            cout << dim;
        }
        cout << endl;
    }

    return 0;
}