#include <bits/stdc++.h>
using namespace std;
int main() {
  string str;
  vector<int> vec(27, 0);
  int k = 0;
  getline(cin, str);
  for (char i : str) vec[(int)(i - 96)]++;
  for (int i = 1; i <= 26; i++) {
    if (vec[i] % 2 == 1) k++;
  }
  if (k <= 1 || (k % 2 == 1))
    cout << "First\n";
  else
    cout << "Second\n";
  return 0;
}
