#include <bits/stdc++.h>
using namespace std;
#ifdef LOCAL
  #include "settings/debug.cpp"
#else
  #define Debug(...) void(0)
#endif
#define rep(i, n) for (int i = 0; i < (n); ++i)
using ll = long long;
using ull = unsigned long long;

int main() {
  string s;
  cin >> s;
  set<string> ans;
  rep(bit, 1 << s.size()) {
    string t = "";
    int l = 0, r = s.size();
    rep(i, s.size()) {
      if (bit & (1 << i)) {
        t += s[l++];
      }
      else {
        t += s[--r];
      }
    }
    ans.insert(t);
  }
  cout << ans.size() << endl;
  return 0;
}