#include <bits/stdc++.h>
#define REP(A,B) for(int (A)=0;(A)<(B);(A)++)
using namespace std;
int XI[1111111], YI[1111111];
int R[1111111];
int C[1111111];
char buf[50];
int main()
{
	int n;
	while(scanf("%d %s", &n, buf) == 2) {
		if(buf[0] == 'R' || buf[0] == 'B') {
			printf("%d\n", n);
		} else if(buf[0] == 'K') {
			printf("%d\n", min(n*n, 4));
		} else {
			if(n < 3) printf("1\n");
			else printf("2\n");
		}
	}
	return 0;
}