s = str(input())

letters=[]
for i in range(1,34):
    letters.append(str(i))

def num(s):
    if len(s)<=1:
        return 1
    else:
        l = s[0:2]
        if l in letters:
            return num(s[1:])+num(s[2:])
        l=l[0]
        if l in letters:
            return num(s[1:])
        return num(s[1:])

print(num(s))