ans = 0
otv = 0
alph = list(set("qwertyuiopasdfghjklzxcvbnm"))
alph.sort()
isin = set()
s = input()
def pereb(sps):
    global ans
    global otv
    global isin
    global s
    global alph
    if len(sps) == len(s):
        if "".join(sps) not in isin:
            if "".join(sps) == s:
                ans += 1
                otv = ans
                isin.add("".join(sps))
                print("#")
            else:
                ans += 1
                isin.add("".join(sps))
                print("##")
        else:
            for i in alph:
                sps.append(i)
                ans += 1
                print("###")
                pereb(n, sps)
                sps.pop()
pereb([])
print(otv)