#include <stdio.h>
#include <math.h>

int arr[1001];
int main() {
	int S;
	char perf;
	while (scanf("%d %c\n", &S, &perf) == 2) {
		int cnt;
		switch (perf) {
			case 'K':
				if (S == 1) {
					cnt = 1;
				} else {
					cnt = 4;
				}
				break;
			case 'N':
				if (S <= 2) {
					cnt = 1;
				} else  {
					cnt = 2;
				}
				break;
			case 'B':
				cnt = S;
				break;
			case 'R':
				cnt = S;
				break;
			default:
				return 1;
		}
		printf("%d\n", cnt);
	}

	return 0;
}