#include <bits/stdc++.h>
using namespace std;
int main() {
  string s;
  cin >> s;
  int n = s.length();
  if (n % 2 == 0) {
    map<char, int> hm;
    for (int i = 0; i < n; i++) {
      hm[s[i]]++;
    }
    int odd = 0;
    for (auto x : hm) {
      if (x.second % 2 != 0) {
        odd++;
      }
    }
    if (odd != 0) {
      cout << "Second" << endl;
    } else {
      cout << "First" << endl;
    }
  } else {
    cout << "First" << endl;
  }
}
