#include <bits/stdc++.h>
using namespace std;
unordered_map<char, int> mp;
int main() {
  int win = 0;
  string s;
  cin >> s;
  for (int i = 0; i < s.size(); i++) mp[s[i]]++;
  for (int i = 'a'; i <= 'z'; i++) {
    win += (mp[i] % 2);
  }
  if (win % 2 != 0 || win == 0)
    cout << "First" << endl;
  else
    cout << "Second" << endl;
}
