import sys,collections
sys.setrecursionlimit(10**7)
mod = 10**9+7
s= input()
d = collections.defaultdict(lambda: 1)
def DFS(s):
    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])%mod
    return d[s]
print(DFS(s))