#include <bits/stdc++.h>
using namespace std;
char s[1001];
int app[128];
int main() {
  scanf("%s", s);
  int len = strlen(s);
  for (int i = 0; i < len; i++) app[(int)s[i]]++;
  int g = 0;
  for (int i = 'a'; i <= 'z'; i++)
    if (app[i] % 2 == 1) g++;
  int who;
  for (who = 1; g > 1; who = -who, g--)
    ;
  if (who == 1)
    puts("First");
  else
    puts("Second");
  return 0;
}
