#include <bits/stdc++.h>
using namespace std;
bool solve(const string& s) {
  vector<int> cnt(26, 0);
  for (int i = 0; i < s.size(); ++i) ++cnt[s[i] - 'a'];
  int tmp = s.size() % 2;
  int even = 0;
  int odd = 0;
  for (int i = 0; i < 26; ++i)
    if (cnt[i] % 2 == 0)
      ++even;
    else
      ++odd;
  if (odd == 0 || (tmp == 1 && odd == 1)) return true;
  return (s.size() % 2 ? true : false);
}
int main() {
  string s;
  cin >> s;
  cout << (solve(s) ? "First" : "Second") << endl;
  return EXIT_SUCCESS;
}
