#include <bits/stdc++.h>
using namespace std;
int main() {
  string s;
  cin >> s;
  int l = s.size(), sc = 0;
  int occ[26];
  memset(occ, 0, sizeof occ);
  for (int i = 0; i < l; i++) occ[s[i] - 'a']++;
  for (int i = 0; i < 26; i++) {
    if (occ[i] % 2) sc++;
  }
  if (sc % 2 || !sc)
    cout << "First";
  else
    cout << "Second";
  return 0;
}
