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