#include <bits/stdc++.h>
using namespace std;
string s;
int cnt[30];
int main() {
  cin >> s;
  for (int i = 0; i < s.size(); ++i) cnt[s[i] - 'a']++;
  int odd = 0;
  for (int i = 0; i < 26; ++i)
    if (cnt[i] & 1) odd++;
  if ((odd == 0) || (odd & 1))
    cout << "First" << endl;
  else
    cout << "Second" << endl;
  return 0;
}
