from sys import stdin
def inputSynario():
    input = stdin.readline
    A = input().rstrip()
    B = input().rstrip()
    return A,B

def toNum(str):
    if(str=="N"):
        return 0
    elif(str=="E"):
        return 3
    elif(str=="S"):
        return 2
    else:
        return 1

(A,B)=inputSynario()
a = toNum(A)+4
b = toNum(B)
print((a-b)%4)