func main()
	var a: char :: cui@inputChar()
	var b: char :: cui@inputChar()
	var dic: dict<char, int> :: #dict<char, int>
	do dic.add('E', 0)
	do dic.add('S', 1)
	do dic.add('W', 2)
	do dic.add('N', 3)
	var ans: int :: (4 + dic.get(b, &) - dic.get(a, &)) % 4
	do cui@print("\{ans}\n")
end func