s=input()
if 'l' not in s and 'o' not in s:
 print(0)
 exit()

x=s.count('l')+s.count('o')
y=s.count('a')+s.count('s')

res=(2**x-1)*(2**y-1)
if x+y==8:
 res-=1
print(max(0,res))