#include <bits/stdc++.h>
using namespace std;
int a[26];
int main() {
  string s;
  cin >> s;
  int i, count = 0;
  for (i = 0; i < s.length(); i++) a[s[i] - 97]++;
  for (i = 0; i < 26; i++) {
    if (a[i] % 2 == 1) count++;
  }
  int l = s.length();
  if (count == 0 || count == 1)
    cout << "First";
  else {
    if (l % 2 == 0)
      cout << "Second";
    else
      cout << "First";
  }
  return 0;
}
