a = input()
b = input()
#E, W, S, N
if a == "E":
    a = 0
if a == "S":
    a = 1
if a == "W":
    a = 2
if a == "N":
    a = 3
if b== "E":
    b = 0
if b == "S":
    b = 1
if b == "W":
    b = 2
if b == "N":
    b = 3
cnt = 0
while True:
    #print(a,b)
    if a ==b:
        print(cnt)
        exit()
    a += 1
    a %= 4
    cnt += 1