#include <bits/stdc++.h>
using namespace std;
int main() {
  int a[140] = {0}, y = 0;
  string s;
  cin >> s;
  int x = s.length();
  for (int i = 0; i < x; ++i) {
    ++a[s[i]];
  }
  for (int i = 97; i <= 122; ++i)
    if (a[i] % 2) ++y;
  if (y % 2 || y == 0)
    cout << "First" << endl;
  else
    cout << "Second" << endl;
  return 0;
}
