import java.io.*;
import java.util.*;

public class Main {
    public static void main(String[] args) throws Exception {
        Scanner sc = new Scanner();
        String start = sc.next();
        String goal = sc.next();
        String[] directions = new String[]{"E", "S", "W", "N"};
        HashMap<String, Integer> numbers = new HashMap<>();
        for (int i = 0; i < directions.length; i++) {
            numbers.put(directions[i], i);
        }
        System.out.println((numbers.get(goal) - numbers.get(start) + 4) % 4);
    }
}

class Scanner {
    BufferedReader br = new BufferedReader(new InputStreamReader(System.in));
    StringTokenizer st = new StringTokenizer("");
    
    public Scanner() throws Exception {
        
    }
    
    public int nextInt() throws Exception {
        return Integer.parseInt(next());
    }
    
    public long nextLong() throws Exception {
        return Long.parseLong(next());
    }
    
    public double nextDouble() throws Exception {
        return Double.parseDouble(next());
    }
    
    public String next() throws Exception {
        if (!st.hasMoreTokens()) {
            st = new StringTokenizer(br.readLine());
        }
        return st.nextToken();
    }
}