A = str(input())
B = str(input())
if A=="N":
    A = 0
elif A=="E":
    A = 1
elif A=="S":
    A = 2
elif A =="W":
    A = 3
if B == "N":
    B = 0
elif B=="E":
    B = 1
elif B=="S":
    B = 2
elif B =="W":
    B = 3
k=0
k = int(B)-int(A)
if k < 0:
    k=k+4
print(k)