a = input()
b = input()

if(a == b):
	print(0)
elif(a == 'N'):
	if(b == 'E'):
		print(1)
	elif(b == 'S'):
		print(2)
	else:
		print(3)
elif(a == 'E'):
	if(b == 'S'):
		print(1)
	elif(b == 'W'):
		print(2)
	else:
		print(3)
elif(a == 'S'):
	if(b == 'W'):
		print(1)
	elif(b == 'N'):
		print(2)
	else:
		print(3)
else:
	if(b == 'N'):
		print(1)
	elif(b == 'E'):
		print(2)
	else:
		print(3)