#include <stdio.h>
#include <vector>

using namespace std;

int main(void) {

	char perf; int size;
	while (scanf("%d %c" , &size, &perf) == 2 ) {
		if(perf == 'K') {
			if (size == 1 ) { printf("1\n"); }
			else { printf("4\n");}
		} else if (perf == 'N') {
			if (size < 3) {
				printf("1\n");
			} else {
				printf("3\n");
			}
		} else if (perf == 'B') {
			printf("%d\n", size);
		} else if (perf == 'R') {
			printf("%d\n", size);
		
		}	
	
	
	}


	return 0;
}