#include <iostream>
#include <iomanip>
#include <vector>
#include <algorithm>
#include <cstring>
#include <map>
#include <queue>
#include <cmath>
#include <complex> // complex<double> a(1.2 , 2.3);// real(): 1.2, imag()2.3
using namespace std;

#define MOD 1000000007
#define ll long long
#define ld long double
#define FOR(i,a,b) for(ll i=(ll)a;i<(ll)b;i++)
#define rep(i,n) FOR(i,0,n)
#define pb push_back
#define mp make_pair
#define all(a) a.begin(),a.end()
#define rall(a) a.rbegin(),a.rend()
#define rmsame(a) sort(all(a)),a.erase(unique(all(a)), a.end())
#define rmvector(a,b) rep(i,a.size())rep(j,b.size())if(a[i]==b[j]){a.erase(a.begin()+i);i--;break;}
template<typename X> bool exist(vector<X> vec, X item){return find(all(vec), item)!=vec.end();}

string S;

ll solve(string str){
  if(str == "") return 0;
  ll ret = 0;
  for(ll i = 1;i<=str.size()/2;i++){
    string sub1 = str.substr(0,i);
    string sub2 = str.substr(str.size()-i,i);
    if(sub1==sub2)ret += solve(str.substr(i , str.size()-i-i));
  }
  ret += 1;
  return ret;
  
}

int main(){
  cin.tie(0);
  ios::sync_with_stdio(false);


  cin >> S;
  ll ans = solve(S);
  cout << ans << endl;
  

  //cout << fixed << setprecision(16) << ans << endl;
  return 0;
}