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

public class Main {
	public static void main(String[] args) {		
		Scanner scn = new Scanner(System.in);
		String start = scn.nextLine();
		String end = scn.nextLine();
		
		ArrayList<String> list = new ArrayList<>(Arrays.asList("N", "E", "S", "W"));
		// {北, 東, 南, 西};
		
		int startIndex = list.indexOf(start);
		int i = startIndex;
		boolean flg = true;
		int count = 0;
		while (flg) {
			if (list.get(i).equals(end)) {
				System.out.println(count);
				break;
			} else {
				i = (i + 1) % 4;
				if(i == startIndex) {
					flg = false;
				}
				count += 1;
			}
		}
		
		scn.close();
	}
}