#include <bits/stdc++.h>

using namespace std;

#define FOR(i,a,b) for (int i = (a); i <= (b); i++)
#define FORD(i,a,b) for (int i = (a); i >= (b); i--)
#define REP(i,b) for (int i = 0; i < (b); i++)

int main() {
    int s;
    char kind;
    while (scanf("%d %c", &s, &kind) == 2) {
        int ans;
        if (kind == 'K') {
            ans = s == 1 ? 1 : 4;
        } else if (kind == 'N') {
            ans = s < 3 ? 1 : 2;
        } else if (kind == 'B') {
            ans = s;
        } else if (kind == 'R') {
            ans = s;
        }
        printf("%d\n", ans);
    }
    return 0;
}