#include <bits/stdc++.h>

#define show(x) cout << #x << " = " << x << endl

using namespace std;
using ll = long long;
using pii = pair<int, int>;
using vi = vector<int>;

template <typename T>
ostream& operator<<(ostream& os, const vector<T>& v)
{
    os << "sz=" << v.size() << "\n[";
    for (const auto& p : v) {
        os << p << ",";
    }
    os << "]\n";
    return os;
}

template <typename S, typename T>
ostream& operator<<(ostream& os, const pair<S, T>& p)
{
    os << "(" << p.first << "," << p.second
       << ")";
    return os;
}


constexpr ll MOD = 1e9 + 7;

template <typename T>
constexpr T INF = numeric_limits<T>::max() / 100;

int main()
{
    string s;
    cin >> s;
    const int n = s.size();
    unordered_set<string> st;
    const int maximum = 1 << n;
    for (int i = 0; i < maximum; i++) {
        int head = 0;
        int tail = n - 1;
        int num = i;
        string news;
        for (int j = 0; j < n; j++) {
            if (num % 2 == 1) {
                news.push_back(s[head]);
                head++;
            } else {
                news.push_back(s[tail]);
                tail--;
            }
            num /= 2;
        }
        if (st.find(news) == st.end()) {
            st.insert(news);
        }
    }
    cout << st.size() << endl;

    return 0;
}