#include <bits/stdc++.h>
using namespace std;
int main() {
  string s;
  cin >> s;
  int arr[26];
  for (int i = 0; i < 26; i++) {
    arr[i] = 0;
  }
  for (int i = 0; i < s.length(); i++) {
    arr[s[i] - 'a']++;
  }
  int odds = 0;
  for (int i = 0; i < 26; i++) {
    if (arr[i] % 2 == 1) {
      odds++;
    }
  }
  if (odds == 0 || odds % 2 == 1) {
    cout << "First" << endl;
  } else {
    cout << "Second" << endl;
  }
  return 0;
}
