#include<iostream>
#include<string>
#include<set>
#define rep(i,a) for(int i=0;i<(a);++i)

std::string S;
std::set<std::string> set;

void rec( int lb, int ub, std::string s )
{
	if( lb == ub )
	{
		set.insert( s+S[lb] );
		return;
	}

	rec( lb+1, ub, s+S[lb] );
	rec( lb, ub-1, s+S[ub] );

	return;
}

int main()
{
	std::cin >> S;
	rec( 0, S.size()-1, std::string() );

	printf( "%d\n", set.size() );

	return 0;
}