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

typedef long long Int;
#define REP(i,n) for(int (i)=0;(i)<(int)(n);++(i))

int main() {
	string s; cin >> s;
	int N = s.size();
	set<string> ap;
	REP(bits, 1 << N) {
		string t;
		int a = 0, b = N - 1;
		REP(i, N) 
		if (bits >> i & 1) {
			t += s[a++];
		}
		else {
			t += s[b--];
		}
		ap.insert(t);
	}
	cout << ap.size() << endl;
}