S = input()
a = S.count('l')+S.count('o')
b = S.count('a')+S.count('s')
if a>0 and b>0:
    if a+b==8:
        print((2**a-1)*(2**b-1)-1)
    else:
        print((2**a-1)*(2**b-1))
else:
    print(0)