#include <iostream>

using namespace std;

int n, ans;
char c;
int main()
{
   while(cin >> n >> c)
   {

      if(c=='K')
      {
        if(n==1) {cout<<1<<endl; continue;}
        else
        {
        cout<<4<<endl; continue;
        }
      }
      if(c=='R')
      {
        cout<<n<<endl; continue;
      }
      if(c=='N')
      {
        if(n<=2)
        {
        cout<<1<<endl;
        continue;
        }
        else
        {
        cout<<2<<endl;
        }
      }
      if(c=='B')
      {
        cout<<n<<endl;
        continue;
      }
   }
    return 0;
}