#include <iostream>
#include <string>
#include <vector>
#include <cmath>
#include <algorithm>
#include <cstdlib>
#include <ctime>
#include <cstdio>
#include <functional>
#include <set>

using namespace std;


int main()
{	
	string s;
	cin>>s;

	set<string> ss;
	for(long long i=0;i<(1<<s.size());i++){
		int l=0,r=s.size()-1;
		long long tmp=i;
		string s2;
		for(int j=0;j<s.size();j++){
			if(tmp%2){s2+=s[l];l++;}
			else{s2+=s[r]; r--;}
			tmp/=2;
		}
		ss.insert(s2);
	}

	cout<<ss.size()<<endl;

	return 0;
}