from sys import stdin

hougaku = ['N', 'E', 'S', 'W']
Comm = input()
Fini = input()

res = 0
mat = hougaku.index(Comm)
while res < 5:
    if hougaku[mat] == Fini:
        break
    res += 1
    mat = (mat + 1) % 4

print(res)