N=input()
if N=="E":
    N_num=1
elif N=="W":
    N_num=2
elif N=="S":
    N_num=3
else:
    N_num=4
B=input()
if N=="E":
    B_num=1
elif N=="W":
    B_num=2
elif N=="S":
    B_num=3
else:
    B_num=4

print(abs(N_num-B_num))