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