#include <bits/stdc++.h>
using namespace std;
void CyBerForCe() {
  string s;
  cin >> s;
  long long l = s.length();
  map<char, long long> mp;
  for (auto i : s) mp[i]++;
  long long e = 0, o = 0;
  for (auto i : mp) {
    if (i.second % 2 == 0)
      e++;
    else
      o++;
  }
  if (o <= 1)
    cout << "First\n";
  else {
    if ((o - 1) % 2 == 0)
      cout << "First\n";
    else
      cout << "Second\n";
  }
}
signed main() {
  ios_base::sync_with_stdio(0);
  cin.tie(0);
  cout.tie(0);
  CyBerForCe();
  return 0;
}
