#include <bits/stdc++.h>
using namespace std;
map<char, int> m;
int main() {
  string str;
  cin >> str;
  int counter = 0;
  for (int i = 0; i < str.size(); i++) {
    m[str[i]]++;
  }
  for (char i = 'a'; i <= 'z'; i++) {
    if (m[i] % 2 == 1) counter++;
  }
  if (counter % 2 == 1 || counter == 0)
    cout << "First";
  else
    cout << "Second";
}
