s = input()

sList = list(s)
c1 = 0
c2 = 0
for i in sList:
    if i == "l" or i == "o":
        c1 = c1 + 1
    elif i == "a" or i == "s":
        c2 = c2 + 1
    else:
        continue

r = (2 ** c1 -1) * (2 ** c2 -1)

print(r)