mod = 1000000007
eps = 10**-9


def main():
    import sys
    input = sys.stdin.readline

    A = input().rstrip('\n')
    B = input().rstrip('\n')

    S = "NESW"
    a = S.index(A)
    b = S.index(B)
    if b - a >= 0:
        print(b - a)
    else:
        print(b - a + 4)


if __name__ == '__main__':
    main()