from math import factorial
s = input()
num = 0
kigou = 0

for i in s:
    if i == "l" or i == "o":
        num += 1
    if i == "a" or i == "s":
        kigou += 1

if num == 0 or kigou == 0:
    print(0)
else:
    n = num
    nums = 0
    for r in range(1, n + 1):
        nums += factorial(n) / (factorial(r) * factorial(n-r))
    n = kigou
    kigous = 0
    for r in range(1, n + 1):
        kigous += factorial(n) / (factorial(r) * factorial(n-r))

    print(int(nums * kigous))