import java.util.ArrayList;
import java.util.Scanner;

public class Rotating_Golem_1806 {
    public static void log(Object obj) {
        System.out.println(obj.toString());
    }
    public static void main(String[] args) {
        Scanner sc = new Scanner(System.in);
        String a = sc.next();
        String b = sc.next();
        ArrayList<String> dirs = new ArrayList<>();
        dirs.add("E");
        dirs.add("S");
        dirs.add("W");
        dirs.add("N");
        int p = dirs.indexOf(a);
        int q = dirs.indexOf(b);
        if((q-p)>=0) {
            log(q-p);
        } else {
            log(b+(3-p)+1);
        }
    }
}