func main()
	var direction: dict<[]char, int> :: #dict<[]char, int>
	do direction.add("N", 0)
	do direction.add("E", 1)
	do direction.add("S", 2)
	do direction.add("W", 3)
	
	var A: []char :: cui@inputStr()
	var B: []char :: cui@inputStr()
	
	var existed: bool
	var counter: int :: (direction.get(B, &existed) -
	|direction.get(A, &existed) + 4) % 4
	
	do cui@print("\{counter}")
end func