#include <bits/stdc++.h>
using namespace std;
int main() {
  string s;
  int alpha[26];
  for (int i = 0; i < 26; i++) alpha[i] = 0;
  cin >> s;
  int count = 0;
  for (int i = 0; i < s.size(); i++) alpha[s[i] - 'a']++;
  for (int i = 0; i < 26; i++) {
    if (alpha[i] % 2) count += alpha[i];
  }
  if (count <= 1)
    cout << "First" << endl;
  else if (count % 2)
    cout << "First" << endl;
  else
    cout << "Second" << endl;
  return 0;
}
