// No.1806 Rotating Golem
package main

import (
	"fmt"
)

func main() {
	var a, b string
	fmt.Scan(&a, &b)
	f := func(s string) int {
		switch s {
		case "N":
			return 0
		case "E":
			return 1
		case "S":
			return 2
		case "W":
			return 3
		}
		return -1
	}

	if a == b {
		fmt.Println(0)
	} else if f(a) < f(b) {
		fmt.Println(f(b) - f(a))
	} else {
		fmt.Println((f(b) + 4) - f(a))
	}

}