/**
 * Created with IntelliJ IDEA.
 * User: Fcdkbear
 * Date: 11.02.13
 * Time: 16:48
 * To change this template use File | Settings | File Templates.
 */

import  java.util.Scanner;
public class test {
    public static void main(String [] args)
    {
        Scanner sc=new Scanner(System.in);
        String s = sc.next();
        int n=s.length();
        int odd=0;
        for (int i=0; i<26; ++i)
        {
            int v1=(int)('a')+i;
            int cnt=0;
            for (int j=0; j<n; ++j)
            {
                int v2=(int)(s.charAt(j));
                if (v1==v2)
                    cnt++;
                //System.out.println(cnt);
            }
            if ((cnt%2)==1)
                odd++;
        }
        if ((odd==0) || ((odd%2)==1))
            System.out.println("First");
        else
            System.out.println("Second");
    }
}