#include <iostream>

using namespace std;

int main(){
	ios::sync_with_stdio(false);
	int n; char c;
	while(cin>>n>>c){
		int oblast = n*n;
		int jehoOblast = 0;
		switch(c){
			case 'K':
				jehoOblast = 9;
				break;
			case 'N':
				jehoOblast = 4;
				break;
			case 'B': case 'R':
				jehoOblast = n;
				break;
		}
		//if(jehoOblast<oblast) oblast=jehoOblast;
		int pocet = (oblast/jehoOblast);
		if(pocet<=0) pocet=1;
		cout<<pocet<<endl;
	}
	return 0;
}