#include <bits/stdc++.h>
using namespace std;

using ll = long long;
#define rep(i, n) for(int i = 0; i < n; i++)

int main() {
	string s;
	cin >> s;
	set<string> st;
	function<void(string, string)> dfs = [&](string ss, string t)
	{
		if(ss.size() == 0) {
			st.insert(t);
			return;
		}
		string w = ss;
		w.erase(w.begin());
		dfs(w, t + ss[0]);
		t += ss.back();
		ss.pop_back();
		dfs(ss, t);
	};
	string t;
	dfs(s, t);
	cout << st.size() << endl;;
}