#include <bits/stdc++.h>
using namespace std;
void printv(vector<int> v) {
  for (int i = 0; i < v.size(); i++) cout << v[i] << " ";
  cout << endl;
}
unsigned long long summ(unsigned long long n) { return ((n * n) + n) / 2; }
bool isubseq(string s, string s1) {
  int ln = s1.length(), lll = s.length(), i = 0, j = 0;
  for (; i < ln && j < lll; i++) j += (s1[i] == s[j]);
  return j == lll;
}
int main() {
  ios_base::sync_with_stdio(0);
  cin.tie(0);
  cout.tie(0);
  int arr[26] = {0};
  string s;
  cin >> s;
  int ln = s.length();
  for (int i = 0; i < ln; i++) {
    arr[s[i] - 97]++;
  }
  int odds = 0;
  for (int i = 0; i < 26; i++) {
    odds += (arr[i] % 2);
  }
  bool winn = 0;
  while (odds) {
    if (odds == 1 && ln % 2) {
      break;
    }
    winn = !winn;
    odds--;
    ln--;
  }
  string as[] = {"First", "Second"};
  cout << (as[winn]) << endl;
  return 0;
}
