import sys
input = sys.stdin.readline
from collections import *

S = input()[:-1]
cnt1 = S.count('l')+S.count('o')
cnt2 = S.count('a')+S.count('s')

if min(cnt1, cnt2)==0:
    ans = 0
elif cnt1+cnt2==len(S):
    ans = (pow(2, cnt1)-1)*(pow(2, cnt2)-1)-1
else:
    ans = (pow(2, cnt1)-1)*(pow(2, cnt2)-1)

print(ans)