#include <bits/stdc++.h>
using namespace std;
int main() {
  ios_base::sync_with_stdio(false);
  cin.tie(NULL);
  string str;
  cin >> str;
  vector<long long> vc(26, 0);
  for (long long i = 0; i < str.length(); i++) {
    vc[str[i] - 'a']++;
  }
  long long k = 0;
  for (long long i = 0; i < 26; i++) {
    if (vc[i] % 2 != 0) k++;
  }
  if (k == 0) {
    cout << "First\n";
    return 0;
  }
  if (k % 2 == 0)
    cout << "Second\n";
  else
    cout << "First\n";
  return 0;
}
