A = input()
B = input()
direction = ['N','E','S','W']
result = 0
ind = 0
if A == 'N':
    ind = 0
elif A == 'E':
    ind = 1
elif A == 'S':
    ind = 2
else:
    ind = 3
cur_A = A
while cur_A != B:
    ind += 1
    cur_A = direction[ind % 4]
    result += 1
print(result)