#include <bits/stdc++.h>
using namespace std;
string s;
int a[27];
int main() {
  int k = 0;
  cin >> s;
  for (int i = 0; i < s.length(); i++) a[s[i] - 'a']++;
  for (int i = 0; i < 26; i++)
    if (a[i] % 2 == 1) k++;
  if (k <= 1 || (k & 1))
    cout << "First";
  else
    cout << "Second";
  return 0;
}
