import sys
input = sys.stdin.readline
sys.setrecursionlimit(10**4+10)
from collections import *

def z_algo(s):
    c = 0
    n = len(s)
    z = [0]*n
    
    for i in range(1, n):
        l = i-c
        
        if i+z[l]<c+z[c]:
            z[i] = z[l]
        else:
            j = max(0, c+z[c]-i)
            
            while i+j<n and s[j]==s[i+j]:
                j += 1
            
            z[i] = j
            c = i
    
    z[0] = n
    return z

def f(l, r):
    t = s[l:r]
    
    if memo[t]!=-1:
        return memo[t]
    
    z = z_algo(t)
    res = 1
    
    for i in range(len(t)-1, -1, -1):
        com = len(t)-i
        
        if z[i]==com and 2*com<=r-l:
            res += f(l+com, r-com)
            res %= MOD
    
    memo[t] = res
    return res

s = input()[:-1]
memo = defaultdict(lambda: -1)
MOD = 10**9+7
print(f(0, len(s)))