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