from sys import stdin


def main():
    input = lambda: stdin.readline()[:-1]
    A = input()
    B = input()

    dir = ["N", "E", "S", "W"]

    a = dir.index(A)
    b = dir.index(B)
    ans = b - a
    if ans < 0:
        ans += 4
    print(ans)


main()