#include <bits/stdc++.h>
using namespace std;
int main() {
  ios_base::sync_with_stdio(false);
  cin.tie(NULL);
  cout.tie(NULL);
  string arr;
  cin >> arr;
  int len = arr.size();
  vector<int> v(26, 0);
  for (int i = 0; i < len; i++) {
    v[arr[i] - 'a']++;
  }
  int count = 0;
  for (int i = 0; i < 26; i++) {
    if (v[i] % 2) {
      count++;
    }
  }
  if (count == 0) {
    cout << "First";
  } else if (count % 2)
    cout << "First";
  else
    cout << "Second";
  return 0;
}
