#include <iostream>
#include <string>
#include <set>
using namespace std;
int main(){
	string s;	cin>>s;
	set<string> dic;
	int cnt=1<<(int)s.size();
	for(int t=0;t<cnt;t++){
		string temp;
		int num=t;
		int f=0,b=(int)s.size()-1;
		while(s.size()>temp.size()){
			if(num%2)	temp+=s[f++];
			else 	temp+=s[b--];
			num>>=1;
		}
		if(dic.find(temp)==dic.end())	dic.insert(temp);
	}
	cout<<(int)dic.size()<<endl;
	return 0;
}