#include <bits/stdc++.h>
using namespace std;
int cnt[26];
int main() {
  ios::sync_with_stdio(0);
  string s;
  cin >> s;
  int odd = 0;
  for (char &c : s) {
    cnt[c - 'a']++;
  }
  for (int i = 0; i < 26; ++i) {
    if (cnt[i] & 1) {
      odd++;
    }
  }
  if (odd == 0 || odd & 1) {
    cout << "First";
  } else {
    cout << "Second";
  }
  return 0;
}
