#include <bits/stdc++.h>
using namespace std;
int main() {
  ios_base::sync_with_stdio(0);
  cin.tie(0);
  cout << fixed << showpoint;
  cout << setprecision(2);
  string s;
  cin >> s;
  vector<int> v(26, 0);
  for (int i = 0; i < s.size(); i++) {
    v[s[i] - 'a'] += 1;
  }
  int count = 0;
  for (int i = 0; i < 26; i++) {
    if (v[i] % 2) count += 1;
  }
  if (count <= 1)
    cout << "First";
  else {
    if (count % 2 == 0)
      cout << "Second";
    else
      cout << "First";
  }
  return 0;
}
