import sys
from math import sqrt, pi, sin, factorial, ceil, floor
BLANK = " "
inp = input
# inp = lambda : sys.stdin.readline()[:-1].strip()
mii = lambda x = BLANK : [*map(int,inp().split(x))]
mfi = lambda x = BLANK : [*map(float,inp().split(x))]
ii = lambda : int(inp())
fi = lambda : float(inp())
p = print
def solve():
s = input()
cnt = 0
for i in s:
if i in "FLDT":
cnt += 1
return 2 ** cnt
if __name__ == "__main__":
tc = 1
for t in range(1, tc+1):
ret = solve()
p(ret)