import sys,collections
sys.setrecursionlimit(10**7)
mod = 10**9+7
s= input()
d = collections.defaultdict(lambda: 0)
def DFS(s,n):
    if s in d:
        return d[s]
    for i in range(1,len(s)//2+1):
        if s[:i] == s[-i:]:
            d[s] += DFS(s[i:-i],n)%mod
    d[s] += 1
    return 1
n = 1
ans = DFS(s,n)
print(d[s]+1)