#include <bits/stdc++.h>
using namespace std;
int main() {
  string x;
  cin >> x;
  int a[26] = {0}, o = 0;
  for (int i = 0; i < x.size(); i++) a[x[i] - 'a']++;
  for (int i = 0; i < 26; i++)
    if (a[i] % 2) o++;
  if (o % 2 || o == 0)
    cout << "First";
  else
    cout << "Second";
  return 0;
}
