#include <bits/stdc++.h>
using namespace std;
int main() {
  string s;
  cin >> s;
  int nodd = 0;
  int count[26] = {};
  for (int i = 0; i < s.size(); i++) count[s[i] - 97]++;
  for (int i = 0; i < 26; i++)
    if (count[i] % 2 == 1) nodd++;
  if (nodd % 2 == 1 and nodd > 0)
    cout << "First";
  else if (nodd == 0)
    cout << "First";
  else
    cout << "Second";
  return 0;
}
