s = input()
a = 0
b = 0
for d in s:
    if d == 'l' or d == 'o':
        a += 1
    elif d == 'a' or d == 's':
        b += 1
ans = ((1 << a)-1) * ((1 << b)-1)
if a+b == len(s):
    ans = max(0, ans-1)
print(ans)