#include <bits/stdc++.h>
using namespace std;
using ll = long long;
int main() {
  string s;
  cin >> s;
  int j = 0;
  int cnt = 0;
  sort(s.begin(), s.end());
  vector<int> arr(27);
  for (int i = 0; i < s.length(); i++) {
    arr[s[i] - 'a']++;
  }
  j++;
  arr[j++];
  for (int i = 0; i < 27; i++) {
    if (arr[i] % 2 == 1) cnt++;
  }
  if (cnt <= 1)
    cout << "First";
  else if (cnt % 2 == 1)
    cout << "First";
  else
    cout << "Second";
}
