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

int main(void) {
	string S;
	cin >> S;
	int N = S.size();
	
	set<string> ss;
	for(int bit = 0; bit < (1 << N); ++bit) {
		int f = 0, b = N - 1;
		string nS;
		for(int i = 0; i < N; ++i) {
			if(bit >> i & 1) nS += S[f++];
			else nS += S[b--];
		}
		
		ss.insert(nS);
	}
	
	cout << ss.size() << "\n";
	
	return 0;
}