#include <bits/stdc++.h>
using namespace std;
string s, rs;
int let[30];
int main() {
  int c;
  c = 0;
  cin >> s;
  for (int i = 0; i < s.length(); i++) {
    let[s[i] - 'a']++;
  }
  for (int i = 0; i < 26; i++) {
    if (let[i] % 2 == 1) c++;
  }
  if (c == 0)
    cout << "First" << endl;
  else if (c % 2)
    cout << "First" << endl;
  else
    cout << "Second" << endl;
  return 0;
}
