#include <bits/stdc++.h>
using namespace std;
int a[40];
int main() {
  int y = 0;
  string s;
  cin >> s;
  for (int i = 0; i < (s.length()); i++) a[s[i] - 'a' + 1]++;
  for (int i = 1; i <= 40; i++)
    if (a[i] % 2 == 1) y++;
  if (y % 2 == 1 || y == 0)
    cout << "First" << endl;
  else
    cout << "Second" << endl;
  return 0;
}
